Mini Chubby 

When your penis is partially erect, like when you see a hot piece of ass on the beach, and get a mini chubby.

Yo the ass on that bitch was so hot, I'm starting to get a mini chubby.

Mini Chubby by G-RED October 29, 2006

Mini Chubb 

A semi-erect, uncontrollable, slight hardening of the penis

His milf mom hugged me goodbye, gave me a mini chubb.

Mini Chubb by Jewbert33 December 19, 2011