The show has covered some "interesting" topics.

[Stephen Hawking]

Off the top of my head, I can think of:-

Masturbation - This has been referenced on many occasions.

Prostitution.

Group sex.

Unhealthy parent and child relationships.

 

Can anybody think of any more?

Edited December 6, 2015 by Stephen Hawking

[Einstein Von Brainstorm]

Virginity and the loss of it.

Women using Men for sex - Leslie Winkle with Leonard.

Women using Men for material gains - Penny's friend with Howard.

[Tensor]

Bestiality- Amy's reference about Penny being lucky she doesn't have a dog. 

Robotiality-Howard  and Leonard 

S & M- Leonard's parents and a ping pong paddle. 

Sexual "toys"- Kripke, Amy, and Penny. 

[Stephen Hawking]

Is "Robotiality" a real word, or did you just make it up?

[Tensor]

Yes.  

[JimT212]

I wonder if The Big Bang Theory ever dealt with or handled certain current events? Thinking about the most recent episode of TBBT dealing with the new Star Wars movie which was released in the U.S. just one day after the TBBT episode's airing. I wonder if the new Star Wars movie (and its release) counts as a "current event"?

[JohnPhD]

'"Interesting"' isn't quite strong enough for some topics it's treated facetiously:

Adult men being attracted to schoolgirls: in 721 Amy dressed as a schoolgirl in a vain attempt to seduce poor Sheldon. Truly disgusting.

Campus rape: in 611 Amy said " You think that's bad. In college, I passed out at a frat party and woke up with more clothes on. " I take it I don't need to spell out what that's saying. Perhaps this Judge Persky in California would appreciate it.

Child loneliness: Amy's schooldays would be heartbreaking IRL. in TBBT it's exaggerated to farce. What's worse IMO is that, when Penny and Bernadette befriend Amy, her behaviour towards them implies that those who shunned her at school and college were wise to do so.

Mental disturbance: Amy's mother sounds quite harmful. And in 903, sitting in Penny's closet sounds mad rather than funny.

Notice the common factor.

Edited June 7, 2016 by JohnPhD
Further examples

[Tensor]

Howard bitten by a rabbit.

[3ku11]

Discloated Elbowm and ER Emergencys. You've seen tackled by this show alot. Partic my all time classic scene from this show Penny and Sheldon at the ER in Adhesive Duck. When Sheldon was like to PEnny It's okay I am here, I have never laughed out loud so much at a show ever. 

[JohnPhD]

Some topics take on significance after they're broadcast because of events IRL. Just considering events in India, for example: when Sheldon and Raj argued about cows being sacred it was just a joke: now it has become part of the ruling ideology leading to "cow protection squads" of upper-caste goons  murdering Muslims and Dalits.

In 306 (I think) when kite-fighting was described as cut-throat competion, Sheldon said that throats were rarely actually cut. Several children have had their throats cut by kite strings in the current kite season.

[alyssaemily]

Don't forget divorce, the fact that Howard's father abandoned him and his mother and of course, the death of Penny's pig, "MoonDance" </3

[Retired CreativeGenius]

Amy's fondness for her (electric) toothbrush. In one episode she runs to the bathroom claiming that she needs to brush her teeth, and adds that she will be a while.

There's the episode The Adhesive Duck Deficiency S3.8  where Howard, Raj, and Leonard go out to see a Meteor Shower. Howard meets some middle school teachers wearing Grateful Dead T-shirts who give him some cookies. Leonard, Howard, and Raj eat the cookies, and miss the meteor shower. Their attack of the munchies is hilarious.

Edited September 5, 2016 by Retired CreativeGenius
name episode

[Stephen Hawking]

Just checking but, you do know what was in those cookies, don't you?

Edited September 5, 2016 by Stephen Hawking

[Retired CreativeGenius]

22 minutes ago, Stephen Hawking said:

Just checking but, you do know what was in those cookies, don't you?

I moved from NY to Colorado, the land of Recreational Marijuana. Edibles are a major part of the legal market. So, I have a clue.

I tried an appetite stimulant strain that made carpet squares with ketchup more appealing than spaghetti with hot dogs.

The pain killing strains work as well.

The ROTFLMAO strains are great an hour or so before TBBT.