Top definition
adjective/noun: 1. A flatulent backside; 2. a malodorous individual
1. Eating those six jars of past-their sellby date peanut butter has made you a proper runkybum! (also runkyarse)

2. You haven't bathed for over a week now, You're a proper runkybum!
by The Man from MilkTray April 02, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug