Tucking is something done by some MTF people and AMAB (assigned male at birth) non-binary people. It is used to minimize the appearance of a bulge in the crotch, hiding genitals. Not all AMAB people choose to tuck, as some find it painful or unnecessary, and it falls down to personal choice. Tucking should never be painful, and if it is, stop immediately. The risks of tucking include urinary tract infections, problems with urination, and inflammation. Tuck carefully and listen to your body.
The He/She/They Project 