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."
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

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

An unusually wide piece of poop, shaped like a tuna can, that leaves your ass feeling gaped after shitting.
by Cous Cous June 7, 2009

by Russ_SoCal January 5, 2009

by m-blaze November 30, 2009

"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

by b-dog123 November 3, 2009
