look up any word, like dirty sanchez:
 
1.
A female who is horny and looking. The term comes from the fact that when a female mamale comes into heat, their genital area increases in temperature to help attract males.
"Tasha was so hot in the ass last night she did the whole crew"
by Dwayne Boyd December 09, 2005
 
2.
Female who is ready for action.
Daag, that Kenisha be hot in the ass!
by willie October 16, 2003
 
3.
Out of Control;
1.) ready to have sex with a lot less discrimination than usual; girls or guys acting like a dog in heat;
2.) angry, unpredictable and violent; likened to a person acting like chilli is burning their asshole so bad they hate everything in life and may begin killing people at any second
1. freak in heat examples:
-Hi, my name is Shirley...
-She's so hot in the ass tonight; right after we fucked she left with Joe and Tim followed- go find 'em and you're 4th to hit it Dog!
-your angry ex texting you: please cum over to sleep...cum over as late as you want, the door is open...please just come fuck me however you want, then leave me wanting more and return whenever you like...-dam, you're hot in the ass!

2. Psycho example:
"Stand up right now motherfucker! Come outside and I'll fuck you up right now!" -Dam that guy is hot in the ass.
by Bricksteam August 02, 2010