An alcoholic drink comprising of 1/2 everclear, 1/2 grape NOS energy drink and purple (grape) cool aid mix, plus 2 caffeine tablets all put into one standard red plastic cup.

the name comes from the following:

Purple: because the drink is purple in color
Jesus: because you will get so drunk you may see jesus
Rodeo: because you'll be so hopped up on energy drink and caffeine tablets that you may be prone to jumping on your friends and riding them around like you're in a rodeo