Definition

That one friend who ruins group plans by refusing to attend events (especially sporting events) and somehow convinces others it's actually a terrible idea. A specialized form of party pooper with an inexplicable talent for corporate jargon-sounding putdowns.

Example Usage

Marcus is being a total cock stapler about the concert—he's now telling everyone the venue has bad acoustics.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=Cock%20stapler&defid=5246107)