verb phrase. Mmm...pants.
Related terms: kiss on the lips, kiss on the cheek.
Real citation: "One, if someone I just met pissed me off, I'd walk away. Immediately. It wouldn't matter how cute he was or now enticing he smelled. Not only that, I would assume any man worth kissing on the pants would do the same."
(Judy McGuire, "New Year's Knuckleheads!," Jan. 4, 2006, http://www.seattleweekly.com/diversions/0601/dategirl.php)
Made-up citation: "Nothing says 'hey sailor!' or ‘happy holidays!’ quite like a kiss on the pants."