A phrase used in place of the word "no", especially when answering a stupid question.
It also implies that the question asker is gay, as they divulged in the activity they are inquiring about.
Example 1:

Dude 1: Did you go to the cinema last night?
Dude 2: Nah, im straight...
Dude 1: Damn!

Example 2:

Dude 1: Have you got Cher's new album?
Dude 2: Nah, im straight...
Dude 3: Owned!
by DaveG217 May 20, 2006
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