Tucking is a technique whereby an individual hides the crotch bulge of the penis and testicles so that they are not conspicuous through clothing. The practice is most commonly employed by transgender people, as well as cisgender men who do drag, or otherwise crave a more androgynous appearance. There are fertility-related side-effects to tucking, such as a reduced sperm count. Some types of clothing, such as gaffs and bloxers are purposefully designed to conceal the crotch bulge.