She gets too drunk

After a while, the girls slowly loosen up, the nerdy ones having drinks and occasionally getting bolder at copping feels of your ass or grazing up against your dick when walking by you.

"Come here..., it's time for my birthday presen..." Tammy grabs you by your cock and pulls you towards her.

She slowly tries to take hold of your semi-stiff dick and manages to wrap her lips around the tip of it, getting it a little wet. You grow harder as the cold air hits the wetness. Tammy is a little too drunk though and falls back onto the couch.

Before you have time to react though, Catherine grabs your arm.

"Come with me, I need your help with something."

You follow her out of the living room, down the hall and turn towards a bedroom. She steps behind you and closes the door with just the two of you inside.

Immediately she leans forward and touches her lips to yours. Then, she reaches down and starts jacking you off.