UPDATE: Added embossed and debossed versions for people without AMS.
Took my model from Cults here and made it free =)
Embossed version: Start with any color, i did black, and then change to White where the text starts. Change again to Yellow for the last two layers.
3 bottom layers is enough, and 4 top layers.
Debossed version: Start with any color, i did black, and then change to White where the text starts. Change again to Yellow for the last two layers, where the "pee"/piss starts.
4 bottom layers, and 3 top layers.
Always preview in the slicer so everything looks right before you send it to print =)