Best definition
Zoinky is a word that can be used any way want. No matter the context. Zoink is the stem and

you can add any letter after. It can mean booty or jellyfish.

Person 1: “I just went zoinky zoinks.”(swimming)

Person 2: “Was it zoinky?”(wet)

Person 1: “Zoink”(onions)

via giphy