Tucking

One method of tucking involves pulling the penis backwards in between the legs while simultaneously pushing the testicles up into the inguinal canal.[2] In order to secure this position in place, some trans women may use especially tight undergarments and a leotard that has a strap.[3] Another practice is the flattening or binding by using tape to fasten the genitalia along the perineum and if possible in between the buttocks. There are also improvised or home-made contrivances whereby an elastic waistband is cut off from an existing garment and then a pouch placed along the middle to then be pulled up.[4]

Some male cross-dressers and pre- and non-op transgender women use purpose-made panty-like garments, often called gaffs, that serve to hide the genitalia and provide a feminine flat and smooth crotch area.[5]

The practice of tucking is also observed among cisgender men for reasons other than appearing female, done in different manners.[6] Some cisgender men do it because they have dysmorphophobia with regards to their genital bulge (also known by the slang terms manbulge[7][8] or moose knuckle[9]). For other men it is due to feeling embarrassment, while others do it to hide an erection[10], to desexualize themselves out of a sense of prudishness or phallophobia[11] or because the bulge is prominent at an inappropriate moment.[12] Methods of tucking include placing the penis behind the waistband sometimes colloquially referred to as uptuck[13][14] while some men may wear purposefully designed compressing underwear.[15][16] Variations of tucking may be used by macrophallic men when they perceive their crotch bulge to have an obscene appearance.[17] There are some types of boxer shorts and boxer briefs that are designed to conceal the male crotch bulge, such as bloxers.[18][19]