I googled 'to look sharp and be on the ball' and found this version in a piece of fiction

To look sharp and be on the ball,
To feel sharp when you hear the call,
To be sharp use Gillette Blue Blades,
For the very closest shave of all.
[something like that]

How does that sound?

If you don't think it's right, you could do the same and keep looking at more pages.