Top Definition
Literally short-hand for "Small Planet. Be Nice."
(#SPBN on twitter courtesy @ennuizle )
Text or Twitter short-hand for "Small Planet. Be Nice." and usually accompanied by a judgmental emoji (often • - • ) that shows the receiving person that you "saw what they did..."

Often used as a 'Tsk'-ing or punitive phrase with someone familiar who just got snagged/called-out doing/saying something mean or naughty or otherwise receiving of stern judgment from their matriarch.

SPBN is often used in conjunction with a 'debating' classroom setting to tell someone secretively that they've gone too far in their argument and to back off or down.
by eric Hews August 15, 2014

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.