Indeed

Touching another person’s private parts as a joke?

Pretty sure in a relationship mutual consent for initiation can be expected.

But what do I know, I never been in one.

Bro hasn’t interacted with a woman in years

Totally, especially with OP’s title. How much longer do we need to repeat that consent can be withdrawn at any moment and than no one is owned anything regardless of their arousal state?
And I know it’s a meme, a joke, but come on, it’s 2025, there are lots of joke material that don’t involve hinting to justifying sexual assault.