The act of ejaculating with your penis up in the air while laying down. Rory's tend to do this and then brag about it. They like to describe it as a "volcano". They more specifically gossip about it in HPE classes and fucking suck at whispering. Although the Rory in your situation may not brag about it in HPE or just in general. If you have overheard such gossip, seek therapy. You will never look any Rory the same again. And also volcano's have officially been ruined for you.
"Woah guys! I just rorycumcano'd!"
"Sick dudeeee"