Male bulge
From wipipedia.org
File:180px-Speedo.jpg
Typical bulge
Male bulge is the bulge caused by a man's genitals, visible in his crotch when he is wearing very tight clothing, such as Speedos, ballet tights or a catsuit. This is appealing to some women and many gay men.
If someone wearing tight clothing wishes to conceal the bulge, he may wear tight control briefs to compress his genitals.
