tickle

The baby started to giggle loudly when her father began to tickle her feet.

(Chinese) 当父亲开始挠她的脚心时，宝宝大声咯咯笑了起来。

Be careful, some people really hate being tickled because it makes them feel out of control.

(Chinese) 小心点，有些人真的很讨厌被挠痒痒，因为这让他们感到失去控制。