whip-smart
Whips crack and snap...so someone who is "whip-smart" is able to come up with an answer right away, and succinctly
The magazine was praised for its spirited, whip-smart analysis of and commentary on current events.
smart whip
Smart whip is a car insurance policy for new young drivers
New Young Driver: Wow I am sure glad I have Smart whip otherwise I would have lost lots of money
New Young Driver friend: why do you sound like an advert??
New Young Driver friend: why do you sound like an advert??