Gzsh

The verbal onomotopoetic equivalent of the (silent) sound made by a hip thrust or a hump. Can be used interrogatively, or also as an exclaimation.

Note on pronounciation: the "zsh" sound is virtually impossible to portray using classical pronounciation guides. Here are instructions: almost clench your teeth as though you were to say "shhhh," then try to make a buzz sound WHILE saying "shh" and keeping the same form, it may help if the very tip of your tongue touches the roof of your mouth.