Nothing should be removed from SpongeBob.
Ever.
There were much riskier scenes in cartoons of the 90s and we turned out just fine. And most of the scenes you guys are refering to are actually some of the better scenes from that show. Without them, the show would just be moralized drivel.
I commend them for not COMPLETELY destroying the show after Season 4+.
Oh, and while some scenes might be imitatable, it's still the responsibility of the parents to explain such situations to them and make surethey don't try anything like that. STOP BLAMING THE SHOWS!!!