Basically a tongue kiss by surprise. Or when least not expected.
Scenario 1:
Aww man, Matt gave Kylie a hairy mango!
Scenario 2:
Sam: Im soo pissed right now!
Olivia: Omg why!?
Sam: Griffin gave me a hairy mango!
Oliva: That fag bitch!
Sam: I know!
Olivia: Want Starbucks?