The storyline highlights their own physical "micropenises" (metaphorical insecurities), such as Schmidt’s "kitten-teat" nipples and Coach’s "geisha waist".
Schmidt and Coach compete for a modeling job after being goaded by Winston and Cece. [S4E4] Micropenis
Jess eventually finds Matt unbearable—not because of his condition, but because he is a "douchebag" who uses his condition to manipulate people and guilt-trip them into dates. 🏢 Subplot: The Modeling Rivalry [S4E4] Micropenis
After Jess criticizes the guys for judging women solely on their looks, they challenge her to prove she isn't shallow. [S4E4] Micropenis