And feel free to express it, in other ways!
Here's a statement that explains why rape jokes are poblematic:
When we talk about creating online spaces that are safe from abuse and respectful for everyone, that must mean a space where rape jokes are not tolerated. Rape jokes are always harmful including in online spaces. When unchecked, rape jokes send a negative message that the trauma of sexual assault is not taken seriously ...
Sexist jokes, rape jokes, and victim-blaming comments may not seem like that big of a deal because they are verbal and not physical, but they contribute to the same way of thinking that fuels real-life violence. When sexual harassment, abuse, and assault are minimized in online comments, videos, or memes, our real-world spaces are influenced by those same disrespectful beliefs and attitudes. It also makes survivors feel unsafe and unwelcome in those spaces and may retraumatize survivors by triggering their past experiences.
Source:
https://www.nsvrc.org/blogs/taking-sexual-assault-seriously-online-and-offline