The weirdest emote I ever did was when someone in my party asked why I'd given my boar (a level 60 Plagued Swine from EPL) the name I had. I gave my boar a /lick, then did a /spit... then said , "It's undead pork- it's Rancid!"
I got a lot of laughs from the group with that one.
Please note that the lick was in a completely platonic and nonsexual manner.