OMG! I figured an average of 40 years of work and 2+ hours a week in meetings. lol! That's right on target based on my experience.

For today: It's not ok go home with someone other than the person who brought you. :p I think there was a song about that. lol!

Drink too much.

Smoke.

Be texting or surfing on your phone.

I agree, drink too much

Selling your child's fund raising stuff for school.

I WISH I had a job that only had 2 hours of meetings per week. My job averages 3 hours of meetings per DAY! But then again....not average so there's no way I would have guessed that!

For today, I will say re-use the buffet plate or dip veggie or chip directly into the dip bowl.

Argue politics!

Tell dirty jokes.

Flirt with someone else's date.

Gossip.

My boss spends almost every minute of every day he is here in meetings. He must skew that average! I think I might attend a meeting once a quarter. I just ignore some of them until I think they will explode and then go.

Hand out unsolicited business cards

Snoop in the host's medicine cabinet

Spike the punch

Get drunk

pick your nose

get drunk

Bring someone uninvited

Ditto with bring someone uninvited

Bring your own food or liquor and not share

Show up too early or too late

This answer is for Jim - Not put the toilet seat down

There are so many things that are unacceptable at social events, and no clues! Hm... Over 30% don't say it's unacceptable. Hm.... Including the snarky answers and "guy" answers maybe the answer is:

Pass gas? Pick your teeth? Blow your nose?

Ignoring bodily functions:

Watch TV/personal device/text

Preach, proselytize.

Besides all of the other guesses, which could ALL be true.