Under giantess tongue.
AI Prompt:
It's no secret that relationships can be complicated. From the outside, it can seem like two people are in love, and yet on the inside, things can be much more complicated. That's the case with a giantess wife and her shrunken husband, who recently cheated on her. The giantess was so angry and hurt that she decided to keep her husband stored under her tongue. He can't go out from there no matter how hard he tries, because her mouth is extremely slippery. All he can do is sit helplessly inside her mouth, forever without being able to go anywhere else. He can't even eat or drink normally, only from her mouth.