Fake charges?
The boys understood that after eating five tacos each, they would be asked where they acquired the money to pay for them. They were afraid of being accused of eating meals purchased with church funds. These types of experiences are uncommon, and most people would find it difficult to accept that a stranger fed them ten tacos.
The lads came up with a solution right away and asked Robert to speak with their grandfather and explain the issue. They couldn’t picture Robert being so gracious as to agree to this as well. They couldn’t have asked for much more than a pleasant chat and delicious dinner.