I Had An Embarrassing Moment

Idk, my embarrassing moment is pretty bad. Warning: the story is sexual, but it was all accident. I don't really write this kind of stuff, so I apologize if it's pretty adult-ish.

My neighbor has really big boobs and she called me, one day, to help her bring some groceries inside her house. Ive done it a couple of times, but this time wouls be different. At the time, we had run out of tighter underwear, in my house, and I had to use boxers, which I hate, because... free willy sometimes shows himself through my pants. Anyways, I'm helping her out and when we finish bringing everything into her house, then she starts asking me for help moving stuff into their appropriate location (eggs in fridge, sugar in cabinet, etc.). She's reaching up to place shit and I'm just staring at her chest while she's reaching upwards. I regret that decision immediately because I started getting an erection. And with the boxer shorts and boxers underneath, anyone can easily see my dick if they just looked down lol. I started using groceries to hide my bulge whenever I could, but at one point, she just takes one of the bags from my hand and I could tell she noticed my bulge when she took it. Things have been real awkward since then lol. No, there hasn't been sex or anything of the sort, it's just an embarrassing story.