when you stick yo dick in yo girls pussy and go as hard and as fast as you can. (this may leave a rash.)
"Dude I cant do it with Megan for a while"
"why bro she mad at you?"
"No man I just gave her a Vicious Pencil last night"
"Oh man that sucks, you should probaly just get a new girl for awhile"
A human finger, typically the index finger; long with a tip. Your meatpencil is unique.
"Hey Carol, have you washed that fillet-o-fish scent off ya meat pencil?"
"She was sniffing her meat pencil because her son is in prison."
"Oh I wish I had never cut my meat pencil off."