Penii
"Penii" in a Sentence (3 examples)
To further the comparison, not only are some men's penii (plural) larger, you can't exercise a penis to make it bigger
[T]he United States Supreme Court had determined […] that artificial testicles were kosher under this law, but prosthetic penii clearly were not.
More dog willies. What’s with the penis? Why so many penii?
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.