What is Clearance From The Tower?
1.
Getting permission from your wife/girlfriend to do something fun with your friends and not her
I'd love to go to the bar Friday, but I need to get clearance from the tower first.
See
2.
Approval from spouse to venture from home, to make a major purchase, or to explore a new sexual avenue with said spouse. See also
Male person #1: So last night, I drove home "the back way."
Male person #2: Dude, did she kill you?
Male person #1: Nah, man. It was cool; I had clearance from the tower on final approach.
See