Top definition
the genitalia of the male which is much smaller than average, possibly even inverted.

also can be used to describe a person who might not be wearing 'normal' clothing - preferably with a long ginger beard and matching hair.
1. He had such a small penis, it was a complete sweet nub.

2. he was a full blown sweet nub, did u see his long leather jacket and platform boots.
by boolke August 06, 2009
Get the mug
Get a sweet nub mug for your dog Sarah.