In Kendall's Instagram video , captioned "unrehearsed. no no," the girls start with your basic palm slaps. Then Kylie does a little Rocket Power-inspired "Woogidy woogidy" move, because what secret handshake is complete without it?Next, the two go in for a fist bump, followed by a lick-slash-peck exchange.In another video posted to Kylie's Snapchat, Kendall gives her sis a quick boob slap before they both burst into laughter.