The idea of GameStop buying eBay is widely considered an absolutely dreadful one , but just in case anyone was still on the fence, GameStop CEO Ryan Cohen gave an interview to CNBC that went so badly it left the hosts, and any viewers, dumbfounded. The core question behind this deeply peculiar move by GameStop is where the company could possibly get the money. Cohen’s answer? Yeah, still waiting on that, because he genuinely didn’t seem to understand the question. GameStop is currently valued at a pretty spurious $11 billion, while eBay is roughly $47 billion. In a rational world, the former obviously couldn’t buy the latter, not least at the $56bn valuation Cohen has suggested. However, with enough backing from speculative investors, such deals are plausible, even if clearly ludicrous. But in GameStop’s case, even with a claimed $20 billion promise of financing, it still falls $14 billion short.…