When you use all of your fingers and toes, your penis, and your tongue, while thrusting your pelvis and giving a maniacal laugh. If done right, you can please up to 22 women.
Did you see that sith lord perform the Grand Opening? He was penetrating 22 women!
A complimentary way to refer to a woman's vagina.
Sarah: That was amazing!
Bill: You sure do have a grand opening!