On my 1s
Meaning by yourself with no help
"Man went to peckham on my 1s fam"
"Woahh, man said peck fam"
"Woahh, man said peck fam"
Run my 1s
Basically telling someone to fight you.
Person 1: Yo, I heard you was talking all that shi, run my 1s tomorrow.
Person 2: Igh bet, you and ****** run my 1s tomorrow at 10:30.
Person: Igh.
Person 2: Igh bet, you and ****** run my 1s tomorrow at 10:30.
Person: Igh.