How fast are you?
This question is common when somebody asked you about your skill :)
Or it is pointed to your service e.g your product.
Let say you are now handling internet provider, automotive, engine oil, shipping, writing stuff and so on, so that above question has the relevance.
Maybe you can answer it as fast as the question come: fast. Very fast!
Erghhh...anybody believe in to your answer?
Maybe yes, maybe not.
It is according to the fact of your product!
Is it really fast? Or you just make a lip service. Or you just bluffing for something...
But, if it is the fact, the reality, you can go ahead.
And if your product has no tagline, let it be.
Put this copy as the tagline: