2 sentences for 疯疯癫癫 (fēng​feng​diān​diān — erratic)

1. 她有点疯疯癫癫的。

   tā yǒu​diǎn fēng​feng​diān​diān de.

   She's a little crazy.

   Source: OpenSubtitles

2. 那个孩子整天疯疯癫癫地跑来跑去，没个正经。

   nà​gè hái​zi zhěng​tiān fēng​feng​diān​diān de pǎo​lái​pǎo​qù, méi gè zhèng​jīng.

   That child runs around wildly all day, never being serious.

   Source: Dong Chinese Dictionary