The bracelet becomes a trap
Mac’s laminated wristband catches inside a children’s slide. The pair needs a child to chew it free.
Supporting source ↗CASE FILE · S12 E02
The Gang Goes to a Water Park
S12 E02Photograph not available
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.
THE SHORT VERSION · SPOILERS AHEAD
INSIDE THE CASE.
The student takes the wallet
Dennis admires Abby’s cons until she invents a mother and steals from him.
Supporting source ↗One slide too many
After skipping queues with a false AIDS claim, Frank rides an unfinished dry slide and emerges bloodied.
Supporting source ↗The warning becomes temptation
Mac repeatedly warns about pool drains; the ending returns to that fixation.
Supporting source ↗THE EVIDENCE
THINGS IN THIS EPISODE.
Characters
Charlie Kelly180 other recorded episodes
Charlie studies the park map while waiting with Frank.Source ↗
Dee Reynolds179 other recorded episodes
Dee remains wedged among the stranded children.Source ↗
Dennis Reynolds176 other recorded episodes
Dennis demonstrates a food scam to Abby.Source ↗
Frank Reynolds171 other recorded episodes
Frank prepares to descend the unfinished slide.Source ↗
The Kiddie Twister attendantOnly recorded here so far
The attendant stands beside the children-only sign.Source ↗
The water-park security guardOnly recorded here so far
The guard confronts Abby and Dennis in the shop.Source ↗
Locations
Kiddie TwisterOnly recorded here so far
The children’s slide ends in a frog-shaped opening.Source ↗
Swimming pools2 other recorded episodes
Visitors float through the park’s water.Source ↗
The Thunder Gun slideOnly recorded here so far
The tall green slide rises above the park.Source ↗
Objects
Dee’s urine-test vialOnly recorded here so far
Dee raises the small testing vial while trapped.Source ↗
Digital cameras2 other recorded episodes
Dennis examines the camera he has acquired.Source ↗
Pool drainsOnly recorded here so far
The final underwater view centers on a drain.Source ↗
Water guns1 other recorded episode
Abby presents the colorful toy during her final trick.Source ↗
Schemes
The water-park line scamOnly recorded here so far
Frank claims to have AIDS to bypass the queue.Source ↗
Running jokes
Charlie’s illiteracy22 other recorded episodes
Charlie struggles to orient the park map.Source ↗
Costumes
Wristbands1 other recorded episode
Mac displays his preserved admission bracelet.Source ↗
Miscellaneous
Thunder Gun Express3 other recorded episodes
Charlie and Frank recognize the movie-branded attraction.Source ↗
FOLLOW THE THREAD
CONNECTED EPISODES.
S05 E04 
Connected through Water guns, Charlie’s illiteracy, Frank Reynolds and 4 more.
S02 E06 Connected through Wristbands, Frank Reynolds, Dennis Reynolds and 3 more.
S05 E01 Connected through Swimming pools, Frank Reynolds, Dennis Reynolds and 3 more.
S05 E05 
Connected through Digital cameras, Frank Reynolds, Dennis Reynolds and 3 more.
SOURCES & NOTES.
Tags document researched occurrences, not every appearance. Read the research notes and attribution.