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 August 06, 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.
"I need to poop so bad. I have an erectum."
by spidurmonkie September 09, 2012
what the hell is an erectum?
by funkblaster4000 July 21, 2006
by Your Best Idiot April 01, 2010
I got majorly aroused by watching a hot chick gleefully fingering a hulkingly-huge guy "back there" and making his also-enormous genitals jerk and spurt profusely over and over, and so da only natural thing for me to do was ask for a turn at stimulating his massive frequent-ejaculation-enlarged prostate, as well; I so totally loved working his warm tight velvety tunnel and feeling his insides throbbing as he made da already-broad white puddle on da floor even larger --- you could definitely say dat he totally had an erectum!
by QuacksO December 22, 2023
by Khimler May 23, 2020
by Kim_size January 31, 2017