Imperative:
* Hug me. (Direct and simple)
* Could you give me a hug? (More polite)
* Let's hug. (More inclusive)
Interrogative:
* Can I have a hug? (Direct and polite)
* Would you like to hug? (More friendly and open-ended)
* Do you feel like hugging right now? (More casual and reflective)
The best option depends on the context and your relationship with the person you're talking to.