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n. Colloquialism referring to the Hummer H2 SUV. It is an established fact that feelings of inadequacy contribute to the purchasing, driving, and flaunting of one's Hummer.
Brad W., a 24-year-old jock who has trouble charming the ladies with his drunken partying, got his dad to buy him a brand-new yellow and chrome penis extension from the local GM dealer. Way to go Brad.
by Carl Willis July 26, 2004
A descriptive term for an expensive vehicle owned by a man, said by a woman who has a pussy so big you could fit a car in it.
Woman:(sarcastic) Hey, nice penis extension you've got there!
Man: STFU and spread your legs so I can park, it's starting to rain!
by CT Vigilante May 27, 2006