Side Pump 

When a guy sticks his dick in between the girls thigh and stomach and starts to thrust inorder to ejaculate

Did you hear?? Jesse side pumped angie last night.

Side Pump by Fantastic Lightbulb July 21, 2018

Pump side 

1. Hitting the other person when they least expect it.

2. The left or right side of somebody.

Like when they pump gas at the gas station.

I snuck up on his pump side.

Pump side by Jake Balinton June 22, 2022