granny boner
a weak, unerected, possibly wrinkley and pruney boner.
Boy: alright im ready, go down on me chick
*girl goes down and starts doin her thing*
Girl: wait you have a granny boner
Boy: ah shit i was in the shower too long
*girl goes down and starts doin her thing*
Girl: wait you have a granny boner
Boy: ah shit i was in the shower too long