A quantity which is excessive to the point of being inappropriate, harmful, or overwhelming.

“You expect too much from your employees.”

Something that is absurdly funny or inappropriate.

“You really are too much!”

Amusing; entertaining.

“Oh, my dear, you really are too much.”

To a greater extent than is wanted or required; excessively.

“You talk (much/far) too much.”

To a sufficiently strong degree to prevent some other action from happening.

“I'm not leaving now ... I'm enjoying myself too much!”