Definition

A creative insult for calling someone dumb or braindead without resorting to actual profanity, perfect for when you want to express disappointment in someone's intelligence but your mom is in earshot. It's the PG-rated way to tell someone their brain is running on dial-up. Family-friendly roasting at its finest.

Example Usage

You put diesel in a regular car? What kind of bumlacker move is that?

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=bumlacker&defid=15913384)