A sly dog informal noun
A tricky or dishonest person
Stay away from him. He's a sly dog.
What a sly dog! He cheated my money.
To deceive or trick someone
1. To carry out something foolish or risky
2. To carry out a trick
to do something very badly, impropperly.
He make a pig's ear of miscalculating in Math so he got zero for this section.