It's Always Sunny in Philadelphia S12E02 - The Gang Goes to a Water Park
The gang takes a trip to a local waterpark, ripe with personal agendas and ulterior motives. Dennis feeds off his mantra of "the park provides" and takes on a protégé. Frank and Charlie are determined to ride every ride by any means necessary and Mac and Dee get stuck in a tube slide for most of the day.
It's Always Sunny in Philadelphia S12E2 Screenshot