Tallywhacker 

A Tallywhacker is a stick that is used to keep score. (originally) and yes, a vernacularism for dong.

Tallywhacker by cyphercube November 6, 2003

tallywacker

A bloke with an enormous penis which he is able to swing over his shoulder. See also see www.tallywacker.co.uk

Man, look at the tallywacker on him - im gonna go jump off a cliff

tallywacker by Batman September 5, 2003

Tallywacker

A Penis

All me have a tallywacker

Tallywacker by Mrmetaknight875345 April 17, 2016

Squatch Tallywhacker 

A Huge hairy penis, that often has the odor of a turd covered in burnt hair

“Sally told me about Paul’s Squatch Tallywhacker

“Hey Mel tell me about your encounter with Kevin last night .”

“Betty it was fun until we got frisky. He was so big but it was too smelly. He definitely had a Squatch Tallywhacker!!!!”

Squatch Tallywhacker by Rothberg-cummer September 23, 2019

Tallywhacker 

part of the male genitalia, as used for whacking tallies

I'm just off to the little boys room to show my tallywhacker the toilet.

Tallywhacker by robbo December 7, 2003

tallywacker

a freaking bad word to use when you really mean zipper.

ms. shoutz told us to make sure our tallywackers weren't showing.

tallywacker by YouScreamLikeAGirl May 13, 2005

talliwacker 

A talliwacker is that thing that men have where women would hsve their pussy. If u didnt know this already, you should be dragged out into the street by your talliwacker and be shot!

My talliwacker is my most important part: I luv my talliwacker!!!!!!

talliwacker by The Black Adept January 22, 2004