P.S. on an invitation

• Inits. on an invitation
• Invitation advisory, or a homophonic hint to the starred answers' starts
• "I'm not providing, you drunks!"
• [Guests must provide their drinks]
• Part of an invitation to a drinker (abbr.)
• Invitation abbr. concerning drinks
• Letters on a frat party invitation
• T.G.I.F. party request
• Abbr. often near "R.S.V.P."

Wikipedia Word definitions in Wikipedia
BYOB or BYO is an initialism meant to stand for "bring your own booze", "bring your own bottle", "bring your own beer" or "bring your own beverage". BYOB is often placed on an invitation to indicate that the host will not be providing alcohol and that guests ...