https://vm.tiktok.com/ZMYCpLTCs/

what does “i come prepared in the booth like a preroll” mean? and also the following line “im getting green call me (?)”

thanks in advance <3

See a translation

A common way to take marijuana is to roll it up with rolling paper and then smoke it. You can do this yourself, or you can buy a "preroll", which has already been rolled up and is ready to smoke. So, a preroll has already been prepared and is ready to go as soon as you buy it.

In the same way, he is saying that when he enters the recording booth to perform he is 100% ready to go and prepared, just like a preroll.

"I'm getting green" is basically saying he is getting money (US dollars are green), and he is saying "call me CeeLo" (full name: CeeLo Green), who is a famous hip hop artist.