
When you unknowingly smoke weed that has been laced with a stronger drug, leading you to freak out by how hard you are tripping.
I thought I was just gonna chill out, smoke a J and watch SpongeBob but I got piff-smacked and ended up crying in the fetal position on the floor.
by limey mo January 25, 2012

A person whom smacks another individual that feels the need to smile like a duck (duck face) in half of their pictures.
by Quacksmackin2011 July 7, 2011

by Diddlydarnitydoo March 6, 2019

The pack of ten hypodermic needles sold at pharmacies to people without a prescription. Intended for use by diabetics without a prescription in an emergency, but more often used by heroin ("smack") junkies and vagrants.
ex. 1— Hey, Alex just scored a balloon, lets grab a smack pack and chase the dragon.
ex. 2— Billy and I are going to lunch but he forgot his insulin syringes at home so we need to grab a smack pack from Duane Reade
ex. 2— Billy and I are going to lunch but he forgot his insulin syringes at home so we need to grab a smack pack from Duane Reade
by xreal February 6, 2015

by Sunsmackerr October 4, 2010

by DepoppyFella September 5, 2023
