Xander runs into her.

Running down the street trying to find Buffy and the others Xander Harris couldn't help but wonder what the hell was going on when he spotted Mrs. Summers only to freeze when he noticed what she was wearing. Shaking his head clear of his perverted thoughts Xander ran over to Mrs. Summers and said, "Mrs. Summers we have to get some where safe everyone is going crazy out here."

"Sure Xander lets go inside and have some fun," Joyce purred as she grabbed him by the arm and brought him into her house. pushing Xander onto the couch Joyce sat down on his lap and kissed him on the lips while holding him by the head so that he couldn't escape.

Aroused, confused, awed, and bewildered by what was happening Xander didn't know weather to push Joyce away or if he should just go with the flow and see what happens.