SBRoxMan
SpongeBobRocksMan
So we know that around Season 7 or so, Patrick did become more of a jerk. In a few episodes, he just did random stupid things for no reason but because the plot said so (looking at you, "Smoothe Jazz In Bikini Bottom"), or episodes where he seemed careless (Pet Sitter Pat, The Card, Tentacle-Vision, Patrick's Staycation)
However, there are still some episodes that showed overall, he's a really nice guy (SpongeBob's Last Stand, The Great Patty Caper, Enchanted Tiki Dreams, Karate Star at the end, even Model Sponge when he was the one to motivate SpongeBob to take the sponge model role)
At the end of Karate Star, we know Patrick tears off his own arm, and grows a new one. This Patrick regretted his actions, learnt his lesson, and even went to try end rebuild Barg N'Mart
However, we also find out that the limbs can also grow new bodies too. And this Patrick carelessly destroyed the Barg N'Mart again without even caring
So my theory is, in those episodes where Patrick appears to be more like a jerk, what if that's actually the 2nd Patrick that grew from that severed limb?