1. to perform rear-entry sex involving variable surface heights and limited
lateral space, e.g. a
stairwell2. to modify the sex act so as to compensate for said limited space, e.g.
shunting to the arm of a couch
"the couch was too narrow so we
shunted off the side a little"
"this chick's
shunting zone was so smooth i kept falling down a step"
"shit was crazy
up in that piece, me and jamal ended up shunting in the stairwell"