A lingerie store.

Abruptly, Bill stopped, and I saw him point out a store just in front of them.

Morgan took one look, and laughed out loud. "You're a real pervert, you know that?" I could see the grin on her face from where I was though.

Bill grinned right back, then leaned in and kissed her right in the open, one hand reaching around to grope her ass as he did so, not even caring that nearby passerby could seem them.

I'd been slapped for doing far less, but Morgan kissed him back, their tongues wrestling while she allowed him to cop a good, long feel of her ass.

Once they finally broke their kiss, Bill let his hand linger on Morgan's ass for several more moments, giving her a push in the direction of the lingerie store.

Morgan laughed again at his insistence as she stumbled briefly on her heels. "You're an asshole too, you know that?" But, despite her words, she strolled into the store with Bill happily enough.

After waiting for a few moments to build up my nerves, I stealthily followed them into the store, taking care to keep a few clothes racks between us.

Through the gaps, I could see Bill shamelessly searching through the selection of lingerie with Morgan right next to him, seemingly gathering up the items with the smallest amounts of fabric.

Morgan tapped her foot as she waited, rolling her eyes whenever Bill showed off a particularly 'good' find, such as a black crotchless G-string, a slutty pink pair of panties with most of the ass cut out, a lace thong with nothing more than beads underneath and more.

Both of them shared a laugh as he held up an otherwise normal, fairly plain, pair of panties with "you must be at least this long to ride" written across the ass, and an image of a ruler significantly longer than my cock displayed underneath.

Morgan lifted up another standard-looking pair, emblazoned with "Not Happening" across the crotch. "Maybe this'll be a nice gift to 'other Morgan.'"

The two them laughed, and I felt my face redden with embarrassment...the thought of Morgan buying a pair of panties specifically to tell me she didn't feel like having sex with me was almost as humiliating as watching her and Bill pick out all the sluttiest options for her to try on.