When I was sweating, my friend knew and said, "I didn't do anything good." What does this joke imply?

I was sweating like a pig. When my friend found out, he said, "Did you specify it?

do a good deed

Son. "What does this joke imply?

This joke may imply that a friend is in the wrong place.

Sweating in dangerous or illegal activities, and

I hope to keep this secret. The expression "designated as not doing good deeds"

It is a Danish language, which is usually used to describe doing something disgraceful.

Things.