What is Sex Is On Fire?
1.
When someone is particularly attractive. Derived from the popular Kings of Leon song "Sex on Fire".
Damn, her sex is on fire.
See 
2.
Like the icing on the cake, something happens to improve something else massively
see also sex is not on fire
-At this party tonight... remember I said Ben wasn't going?
-Aye
-Well now he is
-Sex Is On FIRE!!!
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Random Words:
1. 
A forum witch contains members who love sucking up to other members in higher positions.
Cock SuckingHatersFaggotsAciid Forums
See coc.. 
1. 
The area around the vagina or pussy
"And I massaged her around the vaginal area..."..