Top definition
1. Useless, worthless

2. To cause someone to lose hope; To disapoint; Burst your bubble
1. I don't think she should be on our team. She's a screen door on a submarine.

2. (From the Venture Bros.)
Hank: Aww come on, let me at 'em, Brock! I probably know Judo! How many of those guys can make the same boast?!
Brock: No.
Hank: Why must you be the screen door on my submarine, Brock?
by Katie Tran December 20, 2006
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