packy slap
When you shove a smelly poop into someone's hand with a coin stuck inside and then you slap it into their face when they take the money.
My uncle did a packy slap on my cousin at the grocery store. He was so grossed out he threw up.
At the bus stop, my friend got a packy slap from some random guy. He still hasn't stopped wiping his face.
My mom did a packy slap on my dad for not doing the dishes. He now hates coins.