A backpack mounted rocket launcher originally used by Reinforcements of the Cheat Commandos. Handy for taking out those pesky enemy radar dishes.
"Justice Rocket Backpack Rocket Rocket Fire!!", Reinforcements said while taking out the enemy radar dish.
by Otaku Guardian February 08, 2005
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i go dumb in my backpack

yay area slang. it means you go dumb while wearing your character backpack. character backpacks are popular among baydestrians. it goes with the uniform: stunna shades, blue jeans, white tee, nike/vans, character backpack. characters on backpacks usually have spongebob or superheroes or care bears(for girls) on it.
i go dumb in my backpack, dumb in my backpack. dumb in my, dumb in my, dumb in my backpack.

-song by headbustaz feat. mistah fab
by yay area baby January 22, 2007
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i need to find my backpack

code for "i need to take a crap". it's the new #2, essentially.

based off in a popular sitcom when a boy was trying to lie to his friends saying he was looking for backpack while he was really taking a poo
Guy 1: "Dude, you look uncomfortable."
Guy 2: "Yeah, we need to go home real quick."
Girls: "Why?"
Guy 2: "I need to find my backpack."
Guy 1: "Ohh... yeah, let's go."
Girls: "Now?"
by WallyDetroit March 30, 2009
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a "national holiday" were kids all around the world don't bring their backpacks to school on January 13 and September 15.
Jake: Hey where's your backpack?

Anthony: Bro did you forget? Today is national don't bring your backpack to school day!
by novarae January 13, 2022
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Backpack Dump

When you take someone’s backpack, take a dump in it and bring it back without them knowing.
**Chad takes Brad’s backpack to bathroom**
Chad: I’m going to give this backpack some liquid luck.

**Chad brings back backpack**
Brad: Who took a dump in my backpack?! **Chad is snickering from across the room**

Chad to classmate: I took a backpack dump
by Trappa-keepa March 23, 2018
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Lime backpack

A person who used to be friendly but is now hostile and mad.
Some random Otaku just "kidnapped" my friend so he is now a lime backpack because of that.
by Itz KittyPinkiez June 06, 2024
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monkey backpack

a child leash. typically comes in the form of a stuffed animal with a harness attached
I saw a lot of unruly children running around at the mall. Those parents really could do with some monkey backpacks.
by seenbean August 02, 2023
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