An Erectum is when the man inserts his penis into his partner's ass before it is erect, and then it becomes erect while sitting inside of their partner's ass.
"Did you hook up with that chick last night?"
"Yeah, we had an Erectum."
"...the fuck is an Erectum...?"
"Yeah, we had an Erectum."
"...the fuck is an Erectum...?"
by CJSummer July 16, 2015
When you have to poop so badly that your rectum feels hard. It is often harder to get all the poop out when you go since it is dense and very hard.
by spidurmonkie September 09, 2012
what the hell is an erectum?
by funkblaster4000 July 21, 2006
by Your Best Idiot April 02, 2010
by Kim_size January 31, 2017
by Khimler May 23, 2020
by Khimler December 23, 2016