1. A Rumpo is a big shitty van of any sort. It must be slow and of poor quality.

2. To be rumpoed is to be utterly fucked by the shittiness one one's vehicle. If your shitty van leaves you stranded you have been rumpoed.

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life