sqweegin Share definition Flag Slang: refering to the sexual stimulation of one's own genitals to the point of orgasm. It is performed manually, using the hand. I have been sqweegin so much, ive rubbed the skin off my penis. sqweegin by PW Story September 17, 2007 0 0 Get merch Get the sqweegin mug. Buy Now — $32.95 See more merch