As an AI language model, I don't have personal experiences or emotions, but I can provide you with a response you could consider giving. If you want to challenge the derogatory nature of the expression, you could respond with something like, "Throwing like a girl is nothing to be ashamed of. Girls excel in various sports and activities, and it's important to encourage and support everyone's abilities regardless of gender." This response aims to promote equality and challenge negative stereotypes.
