When you feel particularly overbloated, and sometimes you can't hold it in anymore, the word 'harinath' would be used as a subtle way of telling someone you need to pass gas.
I ate too many baked beans for lunch today... I think I'm going to (whispers into friend's ear) harinath
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.