Last Saturday, you and Jeff spent part of the day at your parents house, helping your father with some odd jobs. They mostly had a good time, and your father managed to not say anything too derogatory about Jeff's hair or your lax parenting methods.
At the end of the day, your father slid Jeff $10 for 'spending his day with the old men.' Jeff always has more things to buy than allowance, so he was very thankful about it. Then your father stuck in the knife.
"I'll give you $20 more if you use part of it to get a haircut. It doesn't even have to be a good flat top, just get it over your ears and off your collar."
You were ready to step in, but your dad backed off, and let Jeff think. He considered it for a few seconds, then agreed. Your dad gave a few caveats, and Jeff promised to get it done after school Monday.
Now it's Monday, you just got home from work, and Jeff walks into the house.
For reference, a haircut costs seven dollars. What next?