n. 1. Analogous to beer goggles. One's judgmental ability is impaired by the amount of beer (or other suitable alcoholic substance) ingested which causes their vision to be blinded by the curtains.
n. 2. Enhancement of a women's beef curtains through alcoholic consumption; open to all those willing to hang her curtains on their rod.
Josh clearly had beer curtains the night he brought home April.
Josie got knocked up due to her inability to blockade her beer curtains.