slush up

slush up

to become messy with slush. As the winter storm increases in intensity, the roads will slush up and become impassable. After an hour of snow and rain, the roads were so slushed up that we could not travel.
See also: slush, up

slush up

in. to drink liquor; to get drunk. They slushed up for a while and went out to look for some chicks.
See also: slush, up