BPT is based off of CPT which is short for Compton. Bloodsdon't pronounce the C's or K's at the start of words. Instead they use a B. So BPT is Blood's Compton
1) BPT sprayed on a wall in compton means Bloods own that part
2) "Nigga I'm from BPT" - YG ( Popular LA based rapper who claims bloods)
"Brown PeopleTime"
The unit of time that attempts to provide a closer estimation to the actual time something is set to occur, specifically in ethnic cultures.
"I'll be there in two hours BPT," actuallymeans "I'll be there sometime before tomorrow."