When PERSON A is giving PERSON B a blow job. And PERSON B cums in PERSON A's mouth without telling them. Out of spite, PERSON A goes up to kiss PERSON B (With cum still in their mouth) and spits it back into PERSON B's mouth.
Jenny: Oh my fricken gosh, he totally didn't warn me he was gonna cum!
Becky: That asshole! Did you get him back?
Jenny: Hell yea bitch, I totally snow blowed his ass!