What is what does it mean to have a tight ass?

The phrase "tight ass" can have several meanings depending on the context in which it's used. Here are a few interpretations:

  1. Physical Fitness: In a literal sense, having a "tight ass" often refers to someone having well-toned buttocks, typically as a result of exercise. This is often seen as a positive attribute indicating physical fitness or athleticism.

  2. Personality or Behavior: Informally, calling someone a "tight ass" can describe a person who is overly strict, uptight, or inflexible. It may imply that the person is conservative in their behavior, humorless, or very rigid in their thinking.

  3. Cautious with Money: Sometimes, "tight ass" is used to describe someone who is stingy or reluctant to spend money. It can imply frugality taken to an extreme, used in a derogatory sense.

The meaning you intend or understand would depend largely on the context and tone in which the term is used.