At my old gig, we constructed a giant cardboard penis, probably about 4 to 5 feet long, complete with a set of balls. We straighted out some wire coat hangers and secured them to the inside of it to ensure the cardcoard would not flex or bend. I would guess it was about a solid 3 hours of total construction time on the company's clock. At about 4:45 we went outside and attached it to the back of the victim's 78 Cadillac using half a roll of packing tape. I then climbed into my truck and waited. Sure enough, at 5 oclock the victim came out, hopped into his car and drove off. I followed that guy for a solid 5 miles crying because I was laughing so hard.