When two guys fist each other and a crust forms around the ring, thus looking like an onion ring.
'You cant go onion ringing without your chap stick!'
by Leatho January 06, 2012
2 more definitions
When one mans penis is shoved into the urethra of another man.
I came so hard when we were onion ringing it last night!
by Onion ring master May 17, 2012
it's when you buy onion rings from a fast food chain and stack them on a man's penis. then you put sauce on the onion rings and eat them off the penis. one by one.
"i was onion ringing with justin last night"
by onionringersforever October 11, 2011