Apologies if this is a repost but I have never seen it posted here. Rosanna a popular youtube star who has a channel called nerdie nummies. She bakes video game themed cakes and has done multiple Q&As. At 7:17 Rosanna tickles her sister feet saying they told her to do it her sister responds by tickling her ribs and sides its a short tickle but good reactions from both girls
https://www.youtube.com/watch?v=EORVNF8v9s8
https://www.youtube.com/watch?v=EORVNF8v9s8