Good question
Morbid obesity, in either gender. Fat bastards in wifebeater vests with ill-judged tattoos on their upper arms make me feel nauseous (cue strikethroughs). Women whose choice of clothing implies they feel they are highly attractive despite ample evidence to the contrary have much the same effect; unjustified arrogance is incredibly offputting. And, I know this is harsh, there's very little more unnattracive than a fat bird with no tits.
(Darth Foxtrot A one-man army dedicated to making fetch happen, Wed 23 Mar 2011, 12:17, 4 replies, latest was 15 years ago)

nauseous nauseated

There you go.
( Monty Boyce, My cheese game is strong, Wed 23 Mar 2011, 12:18, Reply)

someone had to do it

( Vipros. clever got me this far, then tricky got me in, Wed 23 Mar 2011, 12:21, Reply)

Ms Foxtrot hears that a lot

(Darth Foxtrot A one-man army dedicated to making fetch happen, Wed 23 Mar 2011, 12:32, Reply)

Hahaha
Thank you
(Darth Foxtrot A one-man army dedicated to making fetch happen, Wed 23 Mar 2011, 12:23, Reply)

Fat birds with pointy tits, worst of both worlds

( Naked Ape call me Caitlyn, Wed 23 Mar 2011, 12:18, Reply)

When you say 'pointy tits'
Do you mean tits that look like a Wombles nose?
( JeffTheDogFucker Can you dig it?, Wed 23 Mar 2011, 12:24, Reply)

that's the one

( Naked Ape call me Caitlyn, Wed 23 Mar 2011, 12:26, Reply)

wow
I....I didn't know you felt...that...*sniffles*...way about...*sniffles*...mm-mmeeee *quiet sobs*
( Lisette von Falcon, Wed 23 Mar 2011, 12:21, Reply)

Don't be daft
I think you're awesome, you know that
(Darth Foxtrot A one-man army dedicated to making fetch happen, Wed 23 Mar 2011, 12:23, Reply)

I am quite literally everything in that post. Fat bird with no tits wearing a wife beater [as we speak] with an ill-judged upper arm tattoo.

( Lisette von Falcon, Wed 23 Mar 2011, 12:45, Reply)

I imagine you saying this aloud
with all the mannerisms and affectations one would expect of Gok Wan.
(LongJohnBaldry, Wed 23 Mar 2011, 13:06, Reply)