Think about it. What would be offputting in your culture? Try and keep in mind your sub-culture as well. For example, smoking marijuana, although illegal, is taboo in U.S. Christian society, but not in U.S. libertarian or liberal circles. ALSO, try not to mention just what is taboo, but what is NOT taboo that you think would be in other countries!

Also, the FCC bans cursing and nudity on public airwaves and certain cable channels during specific hours...

Hmmm. Talking politics and religion in casual conversation with someone you just meet is also fairly taboo, unless it is in private and the gathering is related to the topic in some way.

Urinating and deficating in view of the public is certainly taboo, as is nudity of any sort. Public displays are mildly taboo, but same-sex PDA is totally taboo everywhere but gay communities.

If your are obese, you'll be stared at. Same thing goes if you are a man and dress like a woman (except in Los Angeles), are male and wear a thong while roller skating, etc. Cursing in public is generally frowned on everywhere except youth events where rebellion against adult tradition is "cool". Drunk driving is illegal and despised by most. We are also required to wear seatblets in most states, and helmets on motorcycles as well.

In the U.S. it is NOT taboo to eat pig, though I suspect that would be offputting in Islmaic and Jewish areas.
It is also NOT taboo to show violence on TV, but I am not sure who would think otherwise elsewhere.