Such as in the case of a gay guy who likes a straight guy, or a guy who likes a girl and just wants to please them by giving head or eating them out respectively
Straight Guy- Dude thats gross, but its been awhile since i got laid so just dont tell anyone.
Guy- AYO GIRL...WANT A FREEBIE?
Girl- I don't know. What if my boyfriend finds out.
Guy- Then I'll give him one too!