When an old man or "geezer" gets a "boner". Either a "natural boner" or one by way of a libido enhancing drug.
Look at that old dude checking that young chick out, I bet he has a gezoner!
Gramps probably can't get a gezoner without taking Viagra!
Gramps probably can't get a gezoner without taking Viagra!
by NW Babe January 30, 2009
Get the gezonermug. by Joe mama123 December 7, 2010
Get the Gezonmug.