You groaned at your body as it forced you to wake up and face the expected consequences of your actions. It wasn't your first time partying too much so you could tell all the things were there, the dizziness that made you feel like walking was quite the chore, the extra sensitivity that made everything brighter, more intense, more annoying around you, a lingering sign that there was a desire to throw up in the past and a bit of stiffness in your body, particularly in your back for sleeping in.. whatever surface you fell unconscious on. 

"Ugh, what the hell did we do.. and where am I" you lazily rubbed your eyes and allowed the drowsiness to exit your body while noting things felt a bit strange, you felt quite cold and you were sure you passed out on the floor, but there was a source of warmth close of you, you could tell. Also, before the brightness dazed you, you could tell this looked like Hannah's house but at the same time didn't so you had no idea what room of the house it was. Finally, it took you a bit but you noticed you were naked, which helped you get back to your senses quicker.

And then you finally saw with clarity around you, which instantly sobered you up.

"This is.. why is everything so.. and they are.. oh fuck" you stammered to yourself as you noticed that yes, the floor was the wooden floor of Hannah's house and the white ceiling was also from Hannah's house, but your sense of scale had fucked up completely. The ceiling was so far above you it might as well be the sky, and with complete disbelief you looked down and realized how laying down your body wasn't near enough to cover the length of a single plank. You understood you somehow had shrunk, and finally looking to your sides you could see where that warmth you felt earlier was coming, there were two still unconscious but fully clothed bodies laying at each side of you.

"How did this happen? What do I do now? And where the fuck are my clothes?" Your initial instinct was to panic at your seemingly impossible situation, wondering why it only happened to you if all you remembered drinking was the punch in the middle of the table and fearing nobody would help you, until a groan from the giantess to your right helped to calm you down a bit. You were among friends, or so you thought, and you could request their help when they wake up. You only needed to check which girl was laying at each side and decide who to stick with, or ask for help from whoever wakes up first...

What happens next?