Step-Mom Is Pushing Boundaries

I can't put in my actual age here. Apparently I'm too young. Suffice it to say, I'm a couple year younger than what is allowed. My step-mom is 32 and my dad is 47. There's a pretty big age gap. Anyways, she's short but has the big ass, and small breast that gets me hard every time I see her in her yoga pants and sports bra.

Anyways, she took me shopping the other day. I was trying on some different clothes in the changing room when she knocked on the door. She had found some bikinis on clearance and asked if she could come in to try them on. The place was packed and all the other rooms were full.

I offer to leave, but she insists I stay and finishing trying on my jeans. Next thing I know she's pulling down her pants and sliding on some swim bottoms over her panties. I'm trying not to be awkward but I froze the moment she pulled her pants down. She nudged me and whispered telling me to relax, saying it's not like I haven't seen it before.

This was kinda true. I have seen her walking around in her panties in the mornings, but it was the taking off of the pants that got me. The little wiggle she has to do to get the bottoms on over her big ass.

She asks me what I think, and I kinda laugh at her panties poking out around the bikini. She laughs too and kinda tucks her panties up behind the bikini showing a hint of her ass cheek. She tells me to keep trying on clothes so I try on a few of the polos she picked out for me. Fully aware I can't take my pants off because I'm rocking freaking hard.

We continue to bump into each other in the small room while she pulls her shirt off and tries on the top over her sports bra. I nearly cam in my pants just watching her take her shirt off. Afterwards she twirls around in the mirror and says she's going to get it. When she pulls the bottoms off though, it pulls her underwear down exposing the top part of her ass.

Something I'm sure she noticed, but I believe she ignored because she liked me staring at her. She continues to put the bikini back on the hanger with her panties down, and then pretends to notice, apologizes saying sorry, you probably don't want to see my big old butt... and pulls them up before getting dressed.

She stays in the room, hurrying me up while I swap out shirts and then have to turn away from her to put my pants back on. I was wearing boxer briefs, but it was obvious I had a hard on. The second she noticed, she started pilling up clothes and folding the stuff I wanted to keep.

Anyways, I hope this keeps up because I can't stop thinking about her. Maybe it was all innocent and I'm making a big deal out of nothing.