Microsoft Exec -- He's Got 2 Bitches!

** WARNING -- THIS VIDEO CONTAINS VERY ADULT LANGUAGE **

By day, he's a geeky Microsoft honcho, but by night, Michael Angiulo got on stage with Too Short and rapped about f***ing 2 bitches at the same time ... and TMZ has the video.

Mike's wife threw a bash for his 40th birthday at a Seattle bar, and hired Mike's hero, Too Short, to perform for the reasonable price of $25k.

So the 2 got on stage, and Mike, who is responsible for the product planning input that drives the vision process for Windows Live and Windows Internet Explorer, killed it ... nailing every lyric.