This happens when you're checking out your favourite athlete's statistics and while getting a hard-on/creaming your pants because his/her stats are so beautiful that you just can't help but express your beloved oh-face.
Gary: Holy shit bro, did you see Dwight Howard's amazing stat line last night? 48 points, 21 boards and 8 blocked shots. I can't get over it.
Mike: Yeah dude, I almost came while I was watching Sports Center this morning.
Mike: What do you mean what?
Gary: ...you...nearly...came? No homo bro, I mean, I didn't want to know this.
Mike: Oh shut up man, there's nothing wrong in having a statgasm.