Define Dumbbell Meaning

Dumbbell
having no knowledge or purpose, doesn't contribute much of work.

"You never seem to be useful, just a dumbbell in our thesis group!"
"You're a dumbbell!"
By Mara
Dumbbell
The act of two males standing back to back with a dildo in eachothers assholes. Similar to scissoring but in a homosexual way. If u look closely it looks like a dumbbell ready to hold by the handle and lift up over ur head and rip those gays a new one.

Today I saw my daddy and my other daddy doing the dumbbell in my bedroom with my sissy dildo.
By Hedvig
Dumbbell
someone who denies they like pot and bums around all the time with nothing else better to do.

"I'm a dumbbell, I've watched anime all day."
By Dolly
Dumbbell Hogger
The douchebags in the gym who hog multiple sets of dumbbells without racking them up for long periods of time.

Swole guy 1: "yo that douche has two 55's, two 60's, and two 65's. How am I gonna do my incline press"
Swole guy 2: "What a fucking dumbbell hogger"
Swole guy 3: "Fuck this, I'm doing crossfit."
By Juana
Dumbbell Dick
When you jack off really hard that your tip of your dick looks abnormally huge.

Damn, look at Sami! He has a dumbbell dick! Haha!
By Ardyce
Dumbbell Sex

I couldn't stop laughing long enough to finish my set, the guy on the next machine was having dumbbell sex.
By Fern
Rusty Dumbbell
When you have a tongue ring/tongue stud and you lick another person's asshole thus creating the look of an old rusty dumbbell.

Holy crap dude, I haven't rimmed a girl since I got this new tongue ring, but last night I went to town on my girlfriend's sister and totally got a rusty dumbbell.
By Alissa
Pennsylvanian Dumbbell
The act of taking an object, like a banana or a pole, up one's ass, then having someone else put it in their ass from the other end. Thus resembling a dumbbell.

Nancy was bored with the usual sexual routines, so her and I used a metal rod to make a Pennsylvanian Dumbbell.
By Alana
2 Dumbbells Up
An excellent rating in a bodybuilding context; the equivalent of 2 thumbs up in a movie rating context

Your abs are showing great definition- 2 dumbbells up!
By Norah
Dumbbell
It means your a dumb shit that wants to be carried by your teammates.(maybe in games or in group activity).
Watch "KPL Thesis Rant" for more information

Your a dumbbell
By Imelda