6 peice onion is a term created by the rapper yeat without any meaning
"Whats up twizzy"
"6 peice onion'
Originated by rapper Yeat. a "6 peice onion" is a way of saying $6k. "peice onion" however may be used for any amount of thousands of dollars e.g "100 piece onion" would be in this case $100k
më & my twizzy just ran up a 6 peice onion fukkit