I can't tell you specifically, but I remember The Wayward Wobbuffet was a pretty funny episode since Ash and his friends and Team Rocket were trying to track it down because it had the key to unlock Pikachu from Team Rocket's contraption.
And To Master the Onixpected which had Brock and Ash trying to get some "useful" tips from Bruno. There was a scene where Brock was trying to persuade Ash that Bruno is an amazing guy and that he will prove it by attempting to strike Bruno on the head with a stick and he will block it, so Brock comes at him from behind and says "Master, show them your lightning speed!" And Bruno, in fact, does not dodge, but instead, gets bumped on the head and says, "Hey, dat hurt."
And in the same episode, Ash tries to carry water up a hill and ends up dumping it all over Misty. Later, Ash attempts to split wood and the wood hits Misty across the head. Lastly, Ash attempts to carry stones up a hill and loses his balance and ends up hopping down the hill with Misty running away yelling, "Help! Help! Help! Help! Help!"