Putterfuck

An outrageously slow or oblivious person on the highway; typically referring to another driver who does not agree with the speaker's style of driving

1. Grandson: Grandpa, why's that man over there driving so slow?

Grandpa: Well Jimmy, that's what we call a putterfuck.

2. God damn putterfuck! Get out of the fast lane!

by Sxeted September 7, 2013