- suck off
- to practise fellatio or cunnilingusonOf obvious derivation:One American GI is forcing a Vietnamese woman to suck him off. (Guardian, 27 September 1971)Equilibrists suck each other off deftly. (Burroughs, 1959)Sucker, a dupe, came from the supposed gullibility of a 19th-century American piglet rather than any sexual association.
How not to say what you mean: A dictionary of euphemisms. R. W. Holder. 2014.