We'd belying if we said that this budding news story doesn't tickle us. It does. Very much so. See, the SF Port-o-potty Arsonist has struck again. It seems the charred remains (hee!) of a portable toilet were, yet again, found on Sunday morning, this time at the intersection of Jackson and Franklin streets in Pacific Heights. SFPD are still on the lookout for a serial port-o-potty arsonist. The toilet infernos, which happen at night and injure no one, haven't caused any serious damage. The last potty blaze hapened on December 6 on teh 1500 block of Vallejo Street.