2 sentences for 痒 (yǎng — tickle)

1. 那个小孩特别怕痒，一碰夹肢窝就大笑起来。

   nà​ge xiǎo​hái tè​bié pà yǎng, yī pèng gā zhī​wō jiù dà​xiào qi​lai.

   That child is very ticklish; he starts laughing as soon as you touch his armpits.

   Source: Dong Chinese Dictionary

2. 那个小孩特别怕痒，一碰到他的腋下就笑得停不下来。

   nà​gè xiǎo​hái tè​bié pà yǎng, yī pèng​dào tā de yè​xià jiù xiào de tíng bù xià​lai.

   That child is very ticklish; he can't stop laughing as soon as you touch his armpits.

   Source: Dong Chinese Dictionary