Swish is this old dirty, shitty tasting homemade liquor that you can barely get into you.

swish is this old dirty shitty tasteing homemade fucking liquor. that you oh can barely get her into ya. but my fuck does it ever get ya some drunk.

Deriving from Great Britain, swish is another term for "cool" or "hip".

In basketball, when you score when hitting nothing but the net.
Also called a "nuthin-but-net"

(noun) A particularly effeminate gay man.

A male homosexual who has a very effeminate swirling stroll as he walks turning from right to left as he advances, his clothes making a swishing noise somewhat like a broom sweeping the floor.

Used to express that a surprising victory or zinger has occurred.

(Usually accompanied by a two-handed gesture: both arms up, palms forward. Then, swing wrists so that your palms end facing the floor without moving your arms. Do this as you say "swish")