Mom-rebate
It´s when you purchase something with your own money upfront and later come crawling to mom for reimbursement. If approved you can expect a wire transfer to replenish your beer funds.
A: Shit, brah. How´d you get the cash for a new Gronk jersey?
B: I just lucked out, a mom-rebate for my orgo book just came through.
B: I just lucked out, a mom-rebate for my orgo book just came through.