Lost?! I'm pretty sure we didn't loose "that" many.
The point of the game we created was to act like we were playing a game (hopefully tricking others in the process).
Usually, we'd just start randomly throwing moby balls on a table and call out random jargon of the tops of our heads. Eventually someone would start acting like they won and the rest of us would act like sore losers.
People would watch us and ask what we were doing and how the game worked. We'd tell them, "Just watch" or something similar and wait for them to realize it was all just a bunch of bs. It usually didn't take too long....