Acting arrogant. Peter Twirling is a more polite euphemism for dick wagging. Essentially a man acting as if his penis were so big he could swing it around like a pocketwatch on a chain.
Ed: Duck, man, here comes that arrogant asshole Bob.

Joe: Man, If I have to endure his peter-twirling bullshit today I'm gonna kick his ass!
by killersbytrade June 7, 2010
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