A group of Flossmoor residents determined to overturn the village’s longtime pickup truck ordinance will bring their argument — and a petition — to the village board meeting on Monday. Flossmoor resident Luke Lambert started the petition on Facebook, not expecting it to get much traction. Quickly, however, he saw like-minded residents signing on, saying they too think the ordinance is outdated and exclusionary. “I was very surprised by the reaction. We’re at about 250 signatures and that hasn’t taken much work,” Lambert said. “I watched the community come together and say, ‘Times are changing, get . . .