When you pull the front of someones underwear up. Like a wedgie in the front.
When I was 13 I still wore tighty whities and this particular night I was wearing a pair from 3 years ago so they were VERY tight. So when I was sleeping one night my brother (who was 16 at the time so hes big) came in and tied up my hands and I am a heavy sleeper so i didn't notice. Then he grabbed the waistband front of my tighty whities and pulled up real hard (giving me a melvin) and was holding me in the air and i kept struggling and he was laughing. Then he drags me into the bathroom and hung me on a towl rack, giving me a hanging wedgie. It hurt very bad. Then he pullled off my pants while i was up there and hid them and so I was hanging there just by my underwear thats all I was wearing. Then my other brother came in and took a picture of if and i kept telling them to stop but they made fun of me for wearing tighty whities.
by Kyle23205884 May 01, 2006
when someone grabbs another rguy by the front waist band and pulls up.
i was just coming out of the bathroom at school when a group odf my friends come in and brian kicks me in the balls and gave me a huge melvin then they draged me in the girls room and left me hanging on the back of the bathroom door and took my clothes when it ripped i was so emmabarassed they had took all my clothes.
by kyle f July 13, 2006
A severely odd and uncool person.
A wimp or a tool.
Mom, why do I have to play in the marching band? All the band kids are frickin' Melvins.
by The Wonderboy August 06, 2005
To poke someone up the bum; Melvin is usually shouted by the offender when they carry out such obscenity.

Aww, come onn! Are you gay or something!?
by I P4P4MURF I October 25, 2010
Direct synonym of camel toe, but more polite. A frontal feminine wedgie. When the fabric of tight pants lodge up in the labia, creating what looks like a split hoof.
God damn, whenever Emily wears those pants it's melvin city!
by salty ballz July 30, 2006
Basically a nerd. A person who plays video games all day and thats his life and obsesses over good grades. Some melvins are just plain losers which are guys who play video games all day and maybe guitar and don't get good grades. yea they exist. He's also the guy who joined the football team because he really has no life and you know when hell week comes up or when you guys finally get pads you're going to make him wish he didn't join. They also talk about guns and military and fighter jets and WWII battles and shit you REALLY REALLY JUST DONT GIVE A SHIT ABOUT and you'd wish they'd stop talking about that shit when they're in your class and everyone just looks at them and looks down, rubs their nose bridge, and sighs.
Dude this fag is posting random shit about guns and dude just omg

I know right?! what a fuckin Melvin
by BongLord Larry July 25, 2010
The act of diarrhea-ing on top of someone's head in a tropical climate so that the Melvinee can't wipe it off.
The reason we smell so bad isn't because of our foray through the jungle. It's because Carruthers decided to drop a steaming Melvin on us...again.
by Meatball #41 December 29, 2013

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