A euphemism for someone who is stoned to the point of being unable understand or answer
basic questions.
The phrase comes from the tendency of
people to go to places like Chipotle when high and then inevitably give a non-answer when the first question--"black or pinto
beans?-- is asked.
Poor Chipotle employee: "Hello sir, can I take your order?"
Stoned
kid: "I want a burrito"
Employee: "Okay, would you like black or pinto beans on that?"
Stoned kid: *no response*
Employee: "Black or pinto?"
Stoned kid: *no response*
Employee: ...
Stoned kid: "Yes"
Employee: "Okay, both kinds of
beans it is"
*Couple walks past kid, obviously stoned out of his mind*
"Wow, he looks like he got both kinds of
beans."