n. 1)A man without the testicle fortitude to tap the ass of the hotties at a party 2) One who cannot get an erection. Everything you've ever wanted to know about limp dick. This one's for the ladies. Gals, if you're not sitting in your house sewing doilies on. Chronic illnesses such as diabetes, high blood pressure, or high cholesterol which can lead to poor blood flow to the penis can cause a penis to be limp.