An exclamation used as a compliment, especially if the person is considered very knowledgeable and has helped a person out in some way with little difficulty doing so.
A man helps a woman open a stuck jar through some clever means, she would declare: "That was easy! You in da house man!"
by Steve Savage September 08, 2005
In the house. What someone might proclaim when they have arrived at a formal business meeting....or even just a totally stoned out party
''Aiight, I iz in da house so lets get down gurlz!''
by Brendan April 06, 2003