a male appendage which when blown properly results in melodic groans from the recipient.
Damn! That girl could sure play a mean gristle whistle!
by scenedad July 10, 2008
1 more definition
The Exterior Sphincter, located at the posterior margin of the anus - your blow hole.
i don't know about ring sting but my gristle whistle exploded after that hot curry last night; at the sauna she let me tap her gristle whistle with my todger
by Tudor Inn May 04, 2011