My biggest pet peeve is litterbugs. I want to go up to them and scold them for not respecting the environment.
I completely agree!  I am all about keeping the earth clean, recycling, and low waste living.  They should get bigger fines!
Yeah, maybe someone should litter in their house so they can see how it feels. And don't get me started on cigarette butts...
I'm right with you.  Oh, cigarette butts gross me out, not to mention second hand smoke which has been found to cause cancer too.