Top definition
The penis of a man with extremely poor hygiene. It is named after the titan arum flower, also known as the corpse flower, whose proper species name (Amorphophallus titanum) roughly translates from Latin as "giant, misshapen penis) and whose odor resembles the smell of a rotting animal.

Synonyms include smelly dick, stinky cock, putrid phallus, and Nickelback.
So how was your date with that guy you're seeing? Did you finally bang?

Oh god no. As soon as he pulled off his pants I could smell his titanarum. I puked in my mouth a little.
via giphy
by R@D December 06, 2016
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