The towel or shirt that a gay man will put over his head -- when at the beach or by the pool -- in order to obtain a better view of his GPS-based gay social apps, such as Grindr, Scruff, Jack'd, etc.
"This sun is crazy! I can't tell who's close by or who's far away. Brb, gonna put on my Grindr burqa for a bit."
"C'mon, grrl, we're at the beach! Come out from under that Grindr burqa!"