A straddle is any set of offsetting positions on personal property. One example, is a put and call option on the same number of shares of a particular security, with the same exercise price and expiration date.
Definition of flack for English Language Learners. : a person whose job is to make people like or be interested in someone or something.
a person who sells quack medicines, as from a platform in public places, attracting and influencing an audience by tricks, storytelling, etc. 2. any charlatan or quack. verb (used without object) 3. to act or operate as a mountebank.