What is Baby Penis?
1.
1. An uncannily small penis on a full grown male
Also see:
Bob: That dude's dick is 3", hard.
Jonny: Yep, he has a baby penis
2.
An oversized clitoris that resembles the penis of an infant.
Chad: "I was going down on this chick last night and she totally had a baby penis, brah!"
Brad: "Duuuude! Gross!"
See