People have seen me in my underwear before. I would imagine it would be pretty difficult to hide something like that - his prosthetic penis in Boogie Nights
trivia
He said in one of the featurettes in The Italian Job (2003) DVD that he thought about doing the movie because it was going to be his third remake in a row (if you don't count Rock Star (2001)) after The Truth About Charlie (2002) and Planet of the Apes (2001).
Four Brothers (2005) After their adoptive mother is murdered during a grocery store hold-up, the Mercer brothers--hotheaded Bobby, hard-edged Angel, family man and businessman Jeremiah, and hard rocking Jack--reunite to take the matter of her death into their own hands. As they track down the killer, they quickly realize that their old ways of doing business have new consequences.
The Italian Job (2003) A band of thieves, led by Charlie Croker (Wahlberg), pulls off the ultimate heist by rigging the stoplights of the city of Los Angeles so that they can drive right out of the city with a carful of gold (in a safe that they're stealing back after Croker's double-crossing ex-partner, played by Edward Norton, stole it from Croker first), with nothing but green lights, while everyone else gets red lights, thus keeping the roads plugged with the largest traffic jam in L.A. history, and the police from pursuing them.
Planet of the Apes (2001) Tim Burton reinvents Pierre Boulle's classic novel, beginning with the famed original film's premise - a pilot finds himself in a world turned upside down after landing on a strange planet - with Burton's unique vision and style breaking new ground in story, design, makeup and visual effects.