bill up

From a pronunciation spelling of build.

bill up (third-person singular simple present bills up, present participle billing up, simple past and past participle billed up)

1. (transitive, intransitive, UK, slang) To roll up a marijuana cigarette.

   Synonyms: bill, skin up

   • 2015, Jme (lyrics and music), “Pulse 8” (track 1), in Integrity>, performed by Jme:

     Fam, I don't blaze / But I can bill up, so if I get bored / I might mm, bill it / At studio, I'm like mm, kill it

   • 2015, Reekz MB, LD, Dimzy (lyrics and music), “Trapping’s Alive” (track 15), in In Skengs We Trust, performed by 67:

     You see skengs ain't cheap and the corn ain't free / But I'll smoke it for free, bill it up, go to sleep

• Jonathon Green (2024) “bill (up) v.”, in Green’s Dictionary of Slang