A tower drop is commonly used phrase in the Car Business by salespeople. A tower drop is when a salesperson brings a customer to the tower(which is where the Sales Managers works the numbers) and surprises the sales manager with them. Ultimately this surprises the sales manager and they have to quickly figure out how to close the sale with out any information needed to close the sale.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)