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1.
An acronym for "Read Between The Lines" (to perceive or detect an obscure or unexpressed meaning)
A guy with puss coming out his pee-hole phones a sexually transmitted disease (STD) help line:

Operator: "You've phoned the STD help line"
Caller: "Hi, I have a friend with puss coming out his pee-hole: what advice would you give him?"
Operator: "Is your friend with you? Can I speak with him directly?"
Caller: "Um. No: but I'll pass the info straight on to him, if you can just tell me what he should do.
Operator: "It's really best if I speak with your friend directly".
Caller: "Um. You need to RBTL here!"
by RBTL guy December 06, 2010