off lop

l.o.p means loss of privileges. In prison loss of privileges means not being able to call, write to family members or contact basically.
To be off lop means to have them back.

Sorry baby if I couldn't call you but I'll be off lop soon.

Lop off

Cutting pulling or ripping something off from and object and then the detached object being thrown away

Guy 1: so yeah, I was just cutting some wood for my new shed that I’m building and then I tripped and the saw fell on my finger and it kind of made me lop off my own finger
Guy 2: sir this is a denny’s