1 definition by AaronTimothy
The high art form of making sweet passionate tounge love to the space between a man's balls and anus. Similar to its female counterpart, cunnulingus.
Guy: Man, what happened last night?
Dude: We got wasted last night, and then Michelle gave me some serious grundlingus!
Guy: Hell yeah!!!
Dude: We got wasted last night, and then Michelle gave me some serious grundlingus!
Guy: Hell yeah!!!
by AaronTimothy November 8, 2005