A penis the size of a large dog, like a Great Dane.
Lil dude be dragging his Marmaduke all around the room and sheeeeeeit! Yo!
by Dick Dickson January 30, 2003
Top Definition
A lame, unfunny comic strip in the newspaper centred on the antics of one large dog named Marmaduke.
Marmaduke is one of the shittiest comic strips ever. Read Foxtrot, it's 10x better.
by 4dimensional January 02, 2005
Motorboating, but with your tongue waving all over and tons of slobber flying everywhere.
I was more than happy to marmaduke her ample cleavage.
by Kray-Zee September 15, 2009
The act of mooning another individual, or group, and bending at such an angle that the mooner's ball sac is revealed.
I was so upset by the referee's bad call, that I dropped my drawers and blinded him with a marvelous marmaduke.
by Rowdy Yates January 04, 2006
The act of engaging in sexual congress with a large dog.
That may be hot, but you know what's hotter? A really hot chick getting Marmaduked.
by Yllets December 24, 2008
A dog in the Cartoon section of newspapers.
"Did you see the Marmduke strip yesterday?"

"Fo' shizzle, mah nizzle!"
by Christina August 31, 2003
An extraordinarily large or voluminous bowel movement. Named in part for the comic-strip Great Dane, known for his extreme size, and in part for duke, a shortening of the fecal synonym dookie.
"Be careful in that stall man, someone took a massive marmaduke in there. It's filling like 75% of the bowl, and they clearly left it there out of pride. Or maybe the toilet just gave up."
by Ambivalent1 March 24, 2014
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