The act of a third party member masturbating two erect males whose penis' are touching by their tips. The handjob giver will slide his hand in a horizontal motion from the end of one penis to the other. This act is usually accompanied by the use of a water-based lubricant and great forearm strength by the masturbator. Coined on February 28th in the year of 2010 by the Great Snail, Slug Tugging has since become a National Pastime of all very masculine heterosexual males.
Note: The masturbator cannot be a woman because that would be just pretty fucking gay.
Snail: Hey FaggotJoe, come give me and this attractive non-ethnic, white male a god damn Slug Tug.
Term for the service one would receive at an Asian massage parlor. Typical service would be first to have the girl give you a "shower" while your naked and laying on a table. Next you receive a nice full body massage, then she turns you over and gives you a hand job (often referred to as a "happy ending").
I was in the city last weekend and got a nice scrub and tug to relax after a hectic week.