A few months ago, Lunchbox's bank accidentally deposited $700 into his account. Ever since it happened, Lunchbox has been saying "money's gone, sorry!" to everyone who asked what he would do if the bank came after him. Turns out, if a bank does find this error then they would take that money out of Lunchbox's account potentially without even telling him.
Not only that, when Lunchbox went to the bank to hypothetically ask about the situation, the tellers told him that whomever this happens to could be fined by the bank if they use the money instead of turning it over. After asking these questions about a hypothetical situation, Lunchbox hightailed it out of the bank so they wouldn't suspect it was him.