Top definition
Petus is a term for a full-grown male who has a penis so small it could be the penis of a fetus.
"That guy showed me his penis in the bathroom. It was so small I'm sure it was a petus."
by New Year's In Tampa April 18, 2009
Get the mug
Get a petus mug for your mate Trump.
3
Alternative to penis... also can be an insult
AHH! She bit my petus.

Bob, quit being such a petus
by RedClaw September 09, 2004
Get the mug
Get a petus mug for your sister-in-law Larisa.