Bullpen session, mainly used by baseball players.

To shove a penis in a vagina and then write in it with pen and continue to like it

A thing you can use to write things with. Alternate uses include kinky sex and TV repair tool.

Slang term for a near professional Magic: The Gathering player that spends a great amount of time honing a spore deck while neglecting others.

Slang and shortform for Penitentiary. Often used in "gangster" terms.

Short for penetration

To take the cap off of a pen, then put it back on. Generally used to calm or distract.