shlongmongrel Share definition Flag Someone like Gabe who is extremely attracted to penises, to the point of being called a sort of 'dog of the cock'. Gabe couldn't be more of an asshole and shlongmongrel if he tried shlongmongrel by Gabe_is_a_dick June 10, 2004 0 0 Get merch Get the shlongmongrel mug. Buy Now — $32.95 See more merch