That '70s Show
Season 4, Episode 21: Prank Day
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It's Prank Day according to Kelso, who manages to trick his friends twice with his stunts. The guys' attempt to retaliate backfires horribly when Red triggers their prank instead. But rather than venting his wrath on Eric, Red joins the prank war to show the boys how it's done. Meanwhile, Jackie throws an impromptu slumber party to cheer Donna up on her parents' wedding anniversary.
All Episodes - Season 4
Episode 1
It's a Wonderful Life
Episode 2
Eric's Depression
Episode 3
Pinciotti vs. Forman
Episode 4
Hyde Gets a Girl
Episode 5
Bye-Bye Basement
Episode 6
The Relapse
Episode 7
Uncomfortable Ball Stuff
Episode 8
Donna's Story
Episode 9
The Forgotten Son
Episode 10
Red and Stacey
Episode 11
The Third Wheel
Episode 12
An Eric Forman Christmas
Episode 13
Jackie Says Cheese
Episode 14
Eric's Hot Cousin
Episode 15
Tornado Prom
Episode 16
Donna Dates a Kelso
Episode 17
Kelso's Career
Episode 18
Leo Loves Kitty
Episode 19
Jackie's Cheese Squeeze
Episode 20
Class Picture
Episode 21
Prank Day
Episode 22
Eric's Corvette Caper
Episode 23
Hyde's Birthday
Episode 24
That '70s Musical
Episode 25
Eric's False Alarm
Episode 26
Everybody Loves Casey
Episode 27
Love, Wisconsin Style