My previous roommate would never share his dinner. Always had an extra McDouble he didn't eat and threw in the trash while muttering, "they didn't have this trash in Eastern Europe".
Same guy told me that he only travels thanks to scamming GoFundMe campaigns for fake dead relatives that he uses to sleep on couches in Europe.
Not so sure what his deal was but he also had a peculiar aversion to social events like blocc parties and book club. Very anti social and hope I don't have to report his future actions to the authorities. Very very odd.