Top definition
A person (usually ginger) who believes slang words their friend tells them.
Joe: Craig, you're such a landumb!
Craig: What's that mean?
Joe: You believed Landon was a real word!
Craig: Agh god guys, I'm such a landumb!
Joe: It's all right. See you soon, Craig!
Craig: Landon man x
by It'sreallyme,joe. October 21, 2011
Get the mug
Get a Landumb mug for your cat Sarah.