My Misha does it all the time, will plonk herself right in front of me, displays her stomach and churp if I don't touch her tummy but then when I do she does what you say and then gets over excited and carried away - she love sit, however has never done it to hubby and if hubby trys to have a little tickle when I do it she jumps straight up and away from him - Misha is all about mummy you see and not daddy so that way I know its affection with me.