At friends 45th birthday party this weekend. Large party everyone drinking away. Was chatting up my friends sexy daughter. Told her I was going to Colorado next week and the talk changed to smoking pot. She asked me if I got high and told her yes. She motions me to follow her and I sneak off to bedroom in back of house away from party. She lights up as I close the door and shotguns me on the lips. Surprised and turned on I take it all in and manage not to cough. Two more times and I'm feeling beyond horny and start to kiss her as she delivers the smoke. She doesn't pull away but instead kisses back. She can feel that I'm hard through my jeans and starts stroking her hand back and forth across my cock. She begins to unbutton my jeans and I make no effort to stop her. She pushes me down on her bed and begins to suck my cock. I'm just about to cum and I hear. "Sam, you better not be smoking back here" from her mom who opens the door. Her first reaction is to the pot saying "I knew it" then realizes I'm in the room and her daughters hand is wrapped around my bare cock. She comes all the way in the room and locks the door (Don't ask me why she didn't lock it). "Are ya done??" She asks laughing and clearly drunk. Sam shakes her head and begins stroking my cock again with her hand. The terror of the moment has brought me away from climax but Sam's vicelike grip on my cock has kept me hard. Mom's face changes to one of disbelief as she watches her daughter start to suck my cock again. I continue to watch mom's expression as Sam speeds up her bobbing. I begin to moan that "I'm going to cum" which only intensifies her motion. She doesn't let up as I begin to erupt and I can feel her swallowing all of me. Mom's look of disbelief turn changes to one of desire and as I button up slowly shrinking she proclaims "you'll be doing this later with me or I'm going to tell Joe what you just did to our 22 year old daughter". 2 hours later mom squeezes my hand and I meet her back in the room. It takes me twice as long to cum but finally do. My friend as far as I know is still none the wiser.