An expression used by females to state the frequency with which they encounter a specific individual or are made aware of their existence, male or female.
"Marcos has sent me five e-mails in the past hour. I swear, he's all up in my vagina. It's so annoying."
The word "chilli", in this popularslang term (especially among scholarly, funny individuals) is commonly used in replacement of the word "business", "grill", "kool-aid", etc.