Brennan: (to Sweets) I have a crisis.
Booth: (whispering) Bones it was just mistletoe.
Brennan: Not the kiss. That was nothing.
Sweets: You kissed?
Brennan: That's not the crisis.
Sweets: Was there tongue?
Booth: All right, you know what? Get your own sex life-
Brennan: Wh-that has nothing to do with sex.
Booth: There was no ... it was ... mistletoe.
Brennan: Totally sexless.