A vacation amongst male comrades, or 'bros' as they are known. Generally a road trip to a desirable spot which allows for good bonding and all sorts of unchecked shenanigans.
When you take a vacation from work and don't tell your bro's or buddies and you don't actually leave town. You just bang women off internet dating sites the whole time.
Man.. I haven't seen B.j. all week.. I think he took a breycation.
When your wife, girlfriend, lover, partner, etc. leaves on a very much needed vacation.
Cree: "Is that you?"
Mary: "Yes."
Cree: "I gotta get outta here." "Jethro's driving me crazy."
"I need a vacation bad.
Mary: "Uh oh." "A babecation?"
Cree: "You got it." "Hurry, come now n' git me."