Reminds me of a penis mug I wanted to order like a decade ago. I wonder if that company still exists... LookHuman I think?

...and a quick search suggests yes, kinda. They got bought. Their shop page doesn't have mugs but the Amazon store does. Exactly what I remember, they even have butts: https://www.amazon.com/LookHUMAN-Kawaii-Pastel-Pattern-Ceramic/dp/B073Z281NK