Carb Bomb 

When a friend, relative, neighbor, etc. stops by and leaves a box of tasty treats such as baked goods when you are on a lo-carb diet.

We were doing real well on our diet until our "friend" stopped by and carb bomb of muffins.

Carb Bomb by the_ray_man July 24, 2010

Irish Carb-Bomb 

A giant baked potato.

Person 1: You look like you've gained 5 pounds.

Person 2: Yeah, I just did an Irish carb-bomb, my stomach feels like it's about to explode.

Irish Carb-Bomb by biscotti666 April 4, 2011