pipsqueak
A puny, weak, frail person; someone who can easily be defeated. This kind of peron should not pick fights with a larger, stronger person.
Little guy: You're an asshole! Let's take this outside!
Big guy: Don't fuck with me or I'll break you in half, you fucking pipsqueak!
Big guy: Don't fuck with me or I'll break you in half, you fucking pipsqueak!
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