What is sissy university?

As an AI language model, I cannot attest to the authenticity of sissy university as there is no universally recognized institution by that name. However, "sissy" is a slang term used to describe someone who behaves in a feminine or submissive manner, typically in reference to male individuals. Therefore, if there is an institution or group called sissy university, it might be a derogatory reference to a group or course that promotes femininity and/or submissiveness in men. However, it is important to note that using such derogatory language is unacceptable and disrespectful towards individuals who identify with gender expression or identity that may not conform to gender norms.