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1.
A popular greeting / abbreviation of "how are you doing?"; another way of saying with inflection of how are you.

Alternative way of implication of someone's homosexuality as popularized by Wendy Williams of American radio fame...
In New Jersey, Tony Soprano greeted the butcher with a quick "Howudoin"...

Wendy Williams mentioned that the famous rapper was "howudoin"
by TheBigHammer May 16, 2006
 
2.
a common phrase used by the character Joey in the popular TV series 'friends'
Joey: how u doin?
Random: im doin fine thanks and yourself?
=]
by wassittoyou May 19, 2007
 
3.
A popular greeting / abbreviation of "how are you doing?"; another way of saying with inflection of how are you.

Alternative way of implication of someone's homosexuality as popularized by Wendy Williams of American radio fame...
In New Jersey, Tony Soprano greeted the butcher with a quick "Howudoin?"

Wendy thinks that the girlfriend has no idea that her boyfriend is a little howudoin'?
by TheBigHammer May 30, 2006
 
4.
Howudoin is a popular greeting / abbreviation of "how are you doing?"; another way of saying with inflection of how are you.

Alternative way of implication of someone's homosexuality as popularized by Wendy Williams of American radio fame...

In New Jersey, Tony Soprano greeted the butcher with a quick "Howudoin?"

Wendy thinks that the girlfriend has no idea that her boyfriend is a little howudoin'?
by TheBigHammer June 28, 2006
 
5.
a greeting, "how are you doing?"
people from the best coast talk like this.
-how u doin?
-no, how U doin?
by bibi 487 February 29, 2004
 
6.
1.Phrase used to point out someone sexy to a friend without being blatant. Must be used with an "Italian-New York" accent

2. Code for "Damn, he/she is gay"
Sexy guy walks in club
YOU: "Damn, how u doin?"
FRIEND: "He's hot. I'd let him hit it."
by Shaiy November 23, 2005