I don't know about eating it upside down. But when put a hamburger down, I do put it upside down. I feel like they stay better in this position.
When upside, up I find all the parts to often slide apart. When you pick it back
Should we come up with a name for this? Flipmacs? Inverter-burger? One thing I like about doing this is that it is disrespectful to the pompous sesame seeds. They think they're so important. We'll show them!