打白条

打白条

Literally means:

write a non-standard receipt

Actually means:

sign an illegitimate bill

白条 means the illegal or non-standard bill that cannot serve as formal financial voucher. After one transaction, one signs an illegitimate bill to substitute for cash in payment, but such bills usually cannot be cashed. This phrase also means failing to realize one's promise.

白条，不符合规定或不能作为财务凭证的非正式单据。指在交易完成后，开出通常不能兑现的非正式单据，用来充当应当支付的现金。也指没有实现诺言。