A short, but very wide human penis. It is widely accepted that one does not have intercourse with a tuna can penis, but rather uses it to punch their lover in the cunt.
Shelly: "I heard Mike has a thick dick. I am so jealous you hooked up with him!"

Nelly: "Umm, we didn't hook up so much as he punched me in the cunt with his tuna can penis"

Shelly: "gross."
by Tunacanenis July 31, 2011
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An unusually wide piece of poop, shaped like a tuna can, that leaves your ass feeling gaped after shitting.
"My ass felt violated after that Tuna Can Doo."
by Cous Cous June 8, 2009
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Someone who has a very girthy dick but lacks in length like a tuna can.
Megan: I told Paige that my favorite position was doggie style. So we tried and his tuna can dick felt like someone curb stomped my puss.
by Chub Mackerel August 4, 2019
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A man with a penis wider than it is long.
"It's not long but it's big around, that's why they call me Tuna Can Tommy."
by Russ_SoCal October 27, 2007
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marijuana that comes sealed in a tuna can; usually very potent.
"Man, this tuna can kush has gotten me so lifted"
by m-blaze November 30, 2009
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2019's version of BDE (Big Dick Energy).
"Todd's a really go-getter. I heard he gave tammi a penile episiotomy, must have that tuna can girth"
by thefox.com January 2, 2019
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A person with a penis that is wider than it is long
I hear Johnny is a tuna can sam!
by b-dog123 November 3, 2009
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