"I never really was much of a practical jokester or anything"

Kristanna Loken's quote suggests that she is not somebody who enjoys playing pranks. This might mean that she is not a fan of pranks or jokes that include physical things or actions. It could also suggest that she is not somebody who delights in making jokes at the expenditure of others. It could be that she prefers to keep her sense of humor more subtle and lighthearted. Whatever the case, it is clear that practical jokes are not something that she is especially interested in. This might be because she chooses to focus on more severe matters or since she just does not discover them amusing. Whatever the reason, it is clear that pranks are not something that she delights in.