Polyester Slack is a poor substitute for real slack, but comes in handy when real slack is in short supply.
Words of warning: mixing vodka with any flavor of Kool Aid other than the elusive Berry Blue will not yield Polyester Slack. Vodka mixed with non-Berry Blue flavors makes a beverage known as a Jim Jones!
Right Reverend Micky D: Fuk yah! Polyester Slack returns!