a bodily gaseous discharge air-trapped in skinny jeans, and only noticed once the skinny jeans are peeled off.
<scene>hipster taking off pants</scene>
Whoa, what's that smell? did I just fart? I don't remember--Oh, it must have been my fart from noon, which was trapped in my skinny jeans. silly me.
I can't believe I hipster farted. How tres embarra-silly.