An uncircumcised penis, resembling that of a slug. Slugs come in all sizes, shapes and colors, just like a penis.
I'm sorry but I have no interest in your slug penis.
by Muddee September 29, 2017
Get a slug penis mug for your girlfriend Jovana.
When you pull out and drag it across their belly or pubic mound
Last time I was with your mom, I pulled out and gave her a penis slug on her pubic mound.
by Cockloogie69 July 18, 2021
Get a penis slug mug for your friend Helena.