Came like Shinji!
A state of joy that is near the point of orgasmic.
The quote either originated with Mikey or Alpha during a showing of the anime movie "End of Evangelion". During one part the character, Shinji, pleases himself a bit took much at the sight of his friend, Asuka who is in the hospital, and holy crap, has boobs.
Example (while watching a special on the making of Star Wars): "When Lucas heard John Williams' score he came like Shinji!"