The habidatial cap is a hat, cap, lid or other head wear that is worn on a penis that is still hard enough to hold the cap in place after sex.
Tony had sex with his girlfriend three times and was still hard enough to hold a cowboy hat on his penis. He proudly showed his grilfriend the hat and said "I am still able to wear the habidatial cap after 3 sessions.
by Rvitale April 19, 2016