1 That's not for eating, don't put it in mouth / don't lick, it's dirty.
2 Splish..splash..
3 Spit it out / don't stick the tounge out.
4 -
5 Are you tired? I'll sing you a lullaby, sweetie.
Holding food in your mouth will erode your teeth. Please chew and and swallow it right away.
ที่จริงคงไม่ร้ายแรงขนาดนี้ แต่นึกอะไรไม่ออกค่ะ พยายามเลี่ยงคำว่า don't อยู่