Rhymes with Skelack but is totally unrelated. This is a practice where the victims asscheeks are closed shut with Plaster of Paris. Usually the outcome of returning a car with less gas then when you left, /q'ing during an epic raid or hitting on a guy that one of your friends is after. (See sleepover)
"Oh god, vapor lock!"
by Ezrielli February 12, 2003
Get the Shlackmug. by Liar Hendrix November 21, 2016
Get the Shlackmug. by Australian Bruce May 26, 2011
Get the Shlack Lackmug. by E April 7, 2005
Get the shlack clack kachoommug. by nmpntilii October 15, 2022
Get the Shlackedmug.