This Stroke of Genius is a fun way to play with a penis! Incorporate this oral sex accessory when performing fellatio on your favorite fella! The soft and stretchy mini sleeve is ribbed for enhanced pleasure. Stretch it over the penis with your flavored lube of choice and take your oral experiences to the next level! Use a Stroke of Genius to explore the “grapefruit method” of simultaneous sucking and stroking! It even glows in the dark for an illuminating session with your partner!