Also found in: Dictionary.
Related to slug bug: slugs
A game in which participants try to be the first to punch the others and say, "Slug bug!" upon seeing a Volkswagen Beetle (known colloquially as a "Bug"). A: "Slug bug!" B: "Ouch! I don't see one anywhere!"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.