Today’s whirlwind Hollywood tour begins in . . . Ben Affleck’s BEDROOM! (Please, hold the applause!) So DIG: Our lady-killer “Pearl Harbor” hunk is in bed with a girl he’s been dating — when she suddenly screams, “There’s a MAN IN THIS ROOM!” Ben, thinking she’s into some weird fantasy trip, plays along and groans something like, “Yeah, baby!” But the girl shrieks again: “NO — THERE’S ANOTHER MAN IN THIS ROOM!” Freaked, Ben jumped up stark naked (Please ladies, no applause!) and was shocked to find NOT one, but TWO guys crawling around on the floor — pointing Polaroid cameras at his cot of love! Turns out it was two buddies staying over at the house — paying notorious practical joker Ben back for pranks HE’S played on them! Bare-ass Ben chased the giggling guys, grabbed the cameras, shoved his pals out and went back to beddie-babe — AFTER locking the door!