sucer, aspirer, être nul
My coworker really knows how to suck up to the boss.
Mon collègue sait vraiment comment flatter le patron.
If they try to trick me, I'll suck their blood.
S’ils essaient de me piéger, je leur sucerai le sang.
— Prisoner of the Mountains (1996)
Do people ask you to suck their cocks because you've got one?
Est-ce que les gens te demandent de leur sucer la bite parce que t’en as une ?
— All About My Mother (1999)