Part: Part Five - Betting Before the Flop

A light squeeze

Pre-flop
Blinds 100 / 200Pot 2,300 (11.5 BB)BB8♠7♠● 25,000 (125 BB)YOUto actCO● 25,000 (125 BB)Loose openerraises 600 (3 BB)BTN● 25,000 (125 BB)Callercalls 600 (3 BB)SBfoldsD

A loose cutoff opens, the button flat-calls, the small blind folds, and you're in the big blind with 8♠7♠.

Raiser-plus-caller, and you hold 8♠7♠ in the BB. Best?

WhySqueeze as a bluff. The flat-caller is capped (he'd have re-raised a big hand) and the opener is loose, so a large three-bet makes both fold a high percentage of the time. 8-7 suited is an ideal bluffing hand - it has playability and equity the times you do get called.
What happensYou squeeze to 2,600 (13 BB); both fold.  You take it pre-flop.
You don't need a premium to squeeze - a raiser-plus-caller is a setup where a big three-bet, even with a suited connector, prints because the caller is capped and the opener is weak.

Squeeze light against a raiser and a flat-caller - both are usually too weak to continue, so fold equity, not card strength, drives the play.