squeaky-clean wedgie means: Combination of both a regular and a melvinfrontal weedgie. The attacker first gives the victim a normal wedgie, then pulls up the victim’s underwear at the front. Repeat this several times, usually with two people at each end pulling alternately. Notice: Underwear will not stay in place if the victim is wearing pantstrousers after a squeaky clean. It should also be mentioned that this is a very painful thing to do to a girl and shouldn’t be done to anyone who doesn’t deserve it. (in Community Dictionary, added by Mia Mcneil)