She then got up on all fours, with me on me knees behind her, her ass inches below my dick."Please be careful! I've never done this before!" She said.... slowly pushed my cock inside her. Her ass was sooo much tighter than her pussy, but not as wet. After a minute I got my manhood fully inside her. I sat there for a minute letting her get used to my cock. Then I began thrusting into her. Hard and fast. I watched my cock go deeper and deeper inside Sophia's massive ass, then come out again, over. " What," hollered Johnny Craft, "You mean we have to strip to our underwear in front of Alice?" Young man, you will address this person as 'Ms Jones'. And, no, you will not strip to your underwear." She paused a beat. Johnny and the other boys began to sag with relief. Suddenly her voice cracked out. "You will be completely naked!"The boys were stunned. Johnny gaped open-mouthed. Alice's cunt got wetter and her nipples harder as she imagined the prospect of these boys stark naked before her.. I used my tongue to fuck her open pussy collecting her juices, tasting her, teasing her. Encouraged by satisfied moans, I explored as far as my tongue could reach, then pulled it out and lay it flat against her moving it back and forth, up and down. Then the tip of my tongue hard against her, touching everywhere, around her opening, then past it, between her pussy and anus, licking, flicking my tongue, then just touching her puckered hole with the tip of my tongue."Oh, Tim." MMM." Then again. We were now both ready to get back to our screwing, we thought however that we heard voices in the building so quickly dressed and made our way out and back into the street. It turned out to be the correct decision because as we exited through one doorway, we saw what looked like a surveyor and a workman entering through another door.We decided the next stop on our history trip would be the former humber lightship which was now retired from service and moored up for visitors to do what visitors.