I decided a while ago that I say what I say and if people do not like it then tough. I have a few times before and I do once in a while when I post really explicit sexual answers go anon, but it doesn't happen often.
I never lie on GaG. I used to post under anon if I had an opinion that went against the grain a bit. Those days are long gone now, though. I answer how I feel best fit and am more than willing to defend what I said if and when others challenge it.
I would never lie while anonymous. Wouldn't that defeat the purpose of going incognito in the first place?