I give you a group of three. One is sitting down, and will never get up. The second eats as much as is given to him, yet is always hungry. The third goes away and never returns.
Stove, fire, and smoke.
Trò gì 5 bé hơn 2, 2 bé hơn 0 và 0 bé hơn 5
Oẳn tù tì (số lượng ngón tay tương ứng với bao, kéo, búa)