hee-haw hee-haw /ˈhiːˌhɔː/

noun

1. A loud laugh that sounds like a horse neighing  ( ha-ha , haw-haw , hee-haw , horselaugh )
   a loud laugh that sounds like a horse neighing
   

verb

1. Braying characteristic of donkeys  ( bray , hee-haw )
   braying characteristic of donkeys