Help... these girls made me so embaressed?

so im a 17 year old male and i had a couple guy friends and girls over at my pool. i had spandex compression shorts under my bathing suit so theyre really tight... im a shy guy and my guy friends wanted to be funny and they pulled down my bathing suit so i was left only in tight spandex. so you could easily see the outline of my dick but its like really big and my balls are big also so i had this huge bulge and these hot girls started laughing. Then i got woody... what should i do next time i see them