Top Definition
To start a thread on an online forum that has great potential for drama, intrigue, and humor, only to abandon it immediately by not writing any follow-up posts whatsoever. Such behavior leaves fellow users unsatisfied, frustrated, and/or concerned for the well-being of the original poster (OP).

Originated on the University of Texas forum Shaggybevo.
"I can't believe this guy would start a thread about his wife wanting to bring a hot lesbian into their marriage, and then totally pull a submart."

"My girlfriend of seven years dumped me and I need a thread telling me not to be a cunt, sack up and live"
-I Love Submart
by CurlyDumps July 01, 2013

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