Elastic trick
When one hides a potentially embarassing erection by pointing it in the upward direction and discreetly tucking it inbetween his stomach and the elastic waistband of his underwear. This technique is mostly used during social events when the erectionee is caught off gaurd and forced to stand up in front of a large group of people in a well-lit area where a hard on is nearly impossible to hide.
While watching a porn in the other room my mother came home and I quickly did the elastic trick and proceeded upstairs like nothing happened