Public bulge sightings

I watch the pic over and over again but I don't understand what you mean. Please, tell me, why is that bulge unusual? Thank you!
For the (not unattractive) size of the bulge, the bulge is extremely confined in the most low part of the crotch of the trousers. Most of the area above and left of it is empty. Whatever that bulge contains looks like very stuffed down in the lowest part of the crotch of the trousers
 
I love walking around in public with an erection. Usually, nobody's looking, and really, if my underwear is tight or structured enough, not really noticeable. But I enjoy knowing that it's hard. When I'm somewhere like an adult toy store or something, I just let it go hard, and walk around aroused. I like the feeling.
 
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