Three-Legged Race
The competition among any combination of three intoxicating recreational substances to see which chemical's effects will win out over the others.
There was a three-legged race among the alcohol, marijuana and cocaine in his body and it seemed as though they were all winning.
Three-legged Race on Wheels
An unweildy situation; a cunundrum; a disorganized even
How was the concert?
It was like a three-legged race on wheels, everything went wrong
It was like a three-legged race on wheels, everything went wrong