male underwear aside
Male underwear pushed slightly aside so that the genitals (erect penis, anus, etc) are exposed. This way sexual actions may be had without pulling the underwear down or completely off.
Do not confuse with male underwear pull, which is for underwear that are pulled down to the thighs, or are being actively pulling own clothes or another.
See also
This tag implicates clothing_aside and male_underwear (learn more).