Just Pissed My Pants used to express excitement or laughter. As in the term "What a pisser" which originated back east. Just Pissed My Pants is a way to say LOL or very funny and was originated by Mr. Jody Sigmund during a text message conversation. Not to be confused by the acronym JPMP Just Pooped My Pants which is actually not very funny at all.
Acronym for the common phrase "just peed my pants while grinning to myself." It is usually used when an individual has literally peed his or her pants after being told a funny joke. Notice it is not laughing and peeing but grinning and peeing. The word is used mainly by people who have mangled vocal cords and also those who generally hate laughter.
Tardy: "Guess what?"
Farty: "What?"
Tardy: "Chicken butt!"
Farty: "JPMPWGTM!!!! THAT'S WUZ SOOOOO FUNNY!!!!! I ACTUALLY CRAPPED MY PANTS TOO HAHAH!"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi