He is a slippery customer, and should be carefully watched.
Don't believe what he says—he's a slippery customer.
Garfield is a slippery customer; he's twice escaped from police custody.
In any case before always the self-sensation is good, how now on the feeling not type, the estimate was grinds to the slippery customer.
You can never pin down Wendy to an exact time and place to meet;she's such a slippery customer.