Top definition
the noise one hears while casually walking down the street and is pulled over by a cop, usually with no reason. the whup whup noise is the siren being turned on for a brief period. is also heard in other police situations, although this is the most common.
friend 1 to friend 2: that bar was awesome! im glad we decided to walk home though, driving is dangerous and cabs are expensive

cop: *whup whup* excuse me gentlemen what are you doing out this late? can i see your IDs
by freedomman5000 July 02, 2011
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