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Johnny Test
Season 4 · Episode 14
Johnny's Big Dumb Sisters
10.011mNovember 26, 2009
The twins' latest invention accidentally makes them dumb thanks to Johnny right before their scholarship interview.
Episodes
- Episode 1Johnny's New Baby Sisters
- Episode 2Porta Johnny
- Episode 3Join the Johnny Scouts
- Episode 4Johnny BC
- Episode 5Runaway Johnny
- Episode 6Johnny on the Spot
- Episode 7Dark Johnny
- Episode 8No Homework for Johnny
- Episode 9Papa Johnny
- Episode 10The Johnnyminster Dog Show
- Episode 11Dukey Jekyll and Johnny Hyde
- Episode 12Johnny's Trophy Case
- Episode 13Johnny's Amazing Cookie Company
- Episode 14Johnny's Big Dumb Sisters
- Episode 15My Johnny Guard
- Episode 16Tom and Johnny
- Episode 17The Quantum of Johnny
- Episode 18Johnny Get Yer Gum
- Episode 19Old School Johnny
- Episode 20Johnny Degrees Below Zero
- Episode 21Johnny Johnny
- Episode 22Johnny Double Coupons
- Episode 23X-Ray Johnny
- Episode 24The Destruction of Johnny X
- Episode 25iJohnny
- Episode 26Johnny vs. The Mummy
- Episode 27Johnny Grow Your Own Monster
- Episode 28Who's Johnny
- Episode 29Princess Johnny
- Episode 3099 Deeds of Johnny Test
- Episode 31Johnny's Amazing Race
- Episode 32Johnny Test in 3D
- Episode 33Guess Who's Coming to Johnny's for Dinner
- Episode 34Johnny's New BFF
- Episode 35Johnny vs. Bling Bling IV
- Episode 36Johnny's Big Sister Smackdown
- Episode 37Sunshine Malibu Johnny
- Episode 38Johnnyicle
- Episode 39King Johnny
- Episode 40Johnny Re-Animated
- Episode 41Johnny Cakes
- Episode 42Johnny Tube
- Episode 43Sleepover at Johnny's
- Episode 44Johnny's Got a Wart!
- Episode 45Johnny's Royal Flush
- Episode 46Johnny Test's Day Off
- Episode 47Johnny & Dark Vegan's Battle Brawl Mania
- Episode 48A Scholarship for Johnny
- Episode 49Johnny Boat Racing
- Episode 50Johnny Lock Down
- Episode 51Good Ol' Johnny Test
- Episode 52Johnny X Strikes Back Again