When you are in law school and you spend all evening or all night fully annotating your law Code with post-its to help memorize rules, it's called a post-it party, and it makes a big paper mess all over the floor.
Julius held a post-it party for five days in a row to prepare for his final exams, what a studious guy.
When a woman forgets to do or get something, the man waits till she falls asleep, and then proceeds to write what she forgot on a piece of paper. He then jerks off onto her face/forehead and presses the note, facing her eyes, onto her face.
When you feed your girlfriend a big meal and forbid her from shitting for the next 7 hours, then do her from behind whilst fingering her butthole so you get a nice juicy wad of poop.
Then write a special message on her back and invite your closest friends to jizz on top of it. Wait for it to dry, then peel it off so you can post it on her fridge.
"Valentine's Day was coming up and I wanted to get her something special, so I gave her the post-it!"