Jam buster 

Adjusting one's cock to make a hardon more comfortable. Usually neccessary as the result of a log jam caused by erotic sights such as up skirt or down blouse viewing. The discomfort of the log jam may force a jam buster in public, in which case it has to be done as fast and as discretly as possible.

I got so darn hard at work the other day looking up this girls skirt, I just had to do a "jam buster" to let my cock stand up. I looked around to see if anyone was looking, then as quickly as possible, I put my hand down the front of my jeans and freed my cock.

Jam buster by Mickeymysterious1 April 27, 2009

jam busters 

Jelly-filled doughnuts

I'll bring the doughnuts in the morning, but there won't be any jam busters! Last time we had them there was jelly left on everything!

jam busters by talk2me-JCH2 March 31, 2021

jambuster 

From Manitoba, Canada, it means a Jelly filled donut.

The filling squirted out, as he ate the Jambuster.

jambuster by Kody B August 3, 2004

Jambuster 

When you're going hard in the back and you start to blow it and leave half inside and the rest caked on the buns.

You creme fill the bun and layer the icing on the bun, thus being a jambuster.

Jambuster by runner52 January 28, 2012