The piss induced erection men wake up with,usualy after a few beers the night before.Second only to diamond in atomic rigidness it is impossible to bend down towards the toliet bowl for a hit and miss,forcing men to go walking the plank.
AKA: Dawn Horn,Morning Root,etc
Jesus christ,put that thing away you pervy little fuck!!
Sorry Mum,these boxers weren't built for piss rifles.
V. when you are in a public bathroom and you got a mean flow going.... a flow so mean and intimidating that the other dude in the john gets stage fright and can't piss.... usually follows heavybeer consumption