Rubber-banded tongue
BDSM idea by Magnuz Binder.
I bring the hard stretched, multiples rubber band as far in around your stretched out tongues possible before I let it roll off my fingers. You whine as it tightens around your tongue and turns the tip of it into a taut, slowly darkening knob. I lick the tip of your tongue teasingly before I pinch it between my fingers and pull it even further out of your mouth, while your saliva starts dribbling over your breasts. I give the tip of your tongue a final hard pinch before I release it and with a grin see how you first try to retract the tied tongue and then without success try to nudge off the taut rubber band with your teeth.