What is Batbrain?
1.
A Batman fan who always has Batman on the brain.
Ever since Tim saw his first Batman movie, he's been a total batbrain.
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Mr.Person A:Yesterday I saw some nerd running around in a Batman suit.
Mr.Person B:What a batbrain.
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Random Words:
1.
Bingo slang for '21'.
"Key in the door - 21!"..