A quick-and-dirty omelette, made by cracking a raw egg into a coffee mug (along with any fillings desired) and heating in the microwave until the egg is cooked through.
Bombfetti refers to the modern practice of surrounding a character in bits of flying dirt, shrapnel and/or sparks, suggesting that there has just been some kind of explosion or powerful movement and yet invariably the characters stands totaly immobile so it just looks like someone is chucking a handful of debris at them from offscreen.
You already know what this is...it's when you're trying to take a massive dump and the turd bomb reaches the sphincter only to release tiny little bomblets. They usually are responsible for that machine gun poop that splashes your ass. It feels like you're pooping Raisnettes.