One of the "sweathogs" in my home room (I decline to admit whether or not I was one of 'em

) Took it a step further. He developed what he called, "THE BLOB" He would tear up a sheet of notebook paper into 4 pieces and then, one at a time, put them into his mouth and chew them all around and get 'em mushy.
He would keep one going for a while until the teacher would leave the room for some reason and then, and THEN....he would stealthily approach the black board and when he was within range he'd carefully take it out of his mouth and give it a fling.
Wish I could duplicate the sound it made when it hit. Not a splat, or a whop, or a phwump but perhaps a blend of the 3???.
I once had a blob up to 2 1/2 sheets of paper going in and English class. Now this teacher was a dried up old hag that hated kids. Why she ever wanted to be a school teacher remains a mystery to this day. Maybe just so she could have access to large numbers of kids to torture.
Anyway she could rarely make it through our 4th period English class without having to excuse herself. On this particular occasion I had waited for the door to close behind her and began my approach. This enormous, dripping, shapeless mass of goo had just left my hand when the door opened and she stepped back into the room. Forgot her purse or something.....
Three things happened simultaneously. The blob hit the blackboard and made "that" sound, Mrs. XXXXX screamed my name, and after a moment of dead silence the entire class burst out in uproarious laughter.
I spent the rest of the school day in the assistant principals office. Got 2 weeks of detention which included cleaning Mrs. XXXXX's black board every day. The phenomenon did occasionally happen again here and there, now and then but I retired from that little club....permanently.