A saying coined by greatest service industry professional alive! Commonly used when someone needs to calm down, chill, or “aerate” themselves.
You need a breath of fresh air. Go decant yourself!
When a man self-catheterizes to empty their bladder, refills it with wine (usually red wine), and serves partygoers by emptying their wine-filled bladder into their glasses
Make sure to bring a catheter to the human decanting party in case you're picked to be the server!