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The act of fingering a girl with any type of ring on your fingers, specifically a large one, characteristic of the mighty green lantern himself.
Bro 1 - Yo man, I totally pulled the green lantern on my girl and she said the ring made it feel so good.

Bro 2 - That's awesome dude, let's go have a bro circle and you can teach me.
by Trickmaster 5000 February 18, 2009
The act of shoving a green glowstick up his/her vagina/anus then turning off the lights to reveal a green glow.
Chris enjoys it when he performs the green lantern on a woman.
by kinky sabor January 22, 2011