Nipple 1 Cleaner H Fast curling adhesive Intercooler, installing nipple 1. Enlarging hole in intercooler. Caution! Slide a hose over the drill bit to only allowing the drill to enter 10 mm (3/8") into the intercooler tank. Further penetration with the drill bit will damage the intercooler. Sexy young couples make each other's toes curl as they have deep, passionate sex! It was found that 24% of all men, both gay and straight had “inserted an object” into their anus, while % had engaged in nipple play and % had used a vibrator. Just over two thirds (%) had rubbed their genitals on a surface while almost half of respondents (%) had used a shower jet.