What is Gromps?
1.
A general grumbling noise uttered when irritated.
"John, remember we're visiting my mum this weekend!"
"GROMPS"
See
2.
A combination of a glomp and a grope. An aggresive tackle hug, usually involving sexual touching.
Real world:
A rushes at B, jumping upon B, grabbing randomly at B's butt and sexual organs.