I remember dorm parties with either green or red wapatui. Wasn’t sure that was the right word but here I googled it:
"What does Wapatui mean?
For those of you who are unfamiliar with the term “Wapatui” (aka Wap), it is defined by Urban Dictionary as “a Midwest college party drink. The idea is each person brings a bottle of clear booze to the party and it all gets mixed in a large container, for example a garbage can works great (new).”