A war of words has erupted on social media after a group of Perth women on a hen's night claim they were shafted by entertainment providers.

The tension began after the bride-to-be's sister Alex gave a less than glowing review of the service provided by Get Bucked Entertainment, on the business' facebook page.

Get Bucked Entertainment unconcerned by negative reviews.

Alex was upset that the mechanical bucking penis (that's right a bucking penis that is ridden and operated in a similar style to the traditional bucking bull) they had organised arrived an hour and a half into their scheduled two hour booking.

According to the post the maid of honour was further infuriated when the operator of the machine was allegedly consuming alcohol during the activity.