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2.
Having adequate merit to justify putting on pants for.
"Dan’s wedding seems like a pantsworthy event."

“Dude, where are your pants?” “I hardly think drive-thru Taco Bell is pantsworthy.”
by This is not Pantsworthy May 09, 2010
 
1.
An adjective describing a task, endeavor, or prospect significant enough to motivate a lazy bachelor to put on pants and get out of the house.
"You're asking me to come watch LOST Season 3 again? Man, that is so not pants-worthy. Talk to you later."
by Moggraider May 13, 2010