You might not want to openly admit to being bad at oral sex, but for the guys out there who think they might be there’s now a web app to help you improve. Named Lick, the app encourages users to lick their smartphone’s screen, teaching you better techniques as you go. Rather than being crude and asking you to actually lick an image of a vagina, the app instead requires you to participate in a series of exercises, most of which require a soft and repetitive motion such as flicking a light switch, sharpening a pencil, and bouncing a beach ball around. To give it a go for yourself head over to LickThisApp.com.