Meaning Standing room only
Type Acronym
Rank ★ ☆ ☆  Uncommon
Usage Online Only (chat, messaging, e-mail)
Comments Means all the seats in a certain location are taken, so there is only standing room available; may be announced ahead of time or text messaged to a person who is arriving late to a meeting, seminar, or other event.
Updated January 2, 2014