1 can frozen limeade (regular size, not the tiny ones)
1 can/bottle cheap beer (12 oz)
Tequilla -- 1/3 to 1/2 of limeade can full (or to taste!)
Mix all in a pitcher, pour over ice. To salt rims of glasses: Pour marguerita salt onto a small plate, rub rim or glass with a damp clean sponge/cloth, press rim into salt, tap gently to knock off loose salt.
Makes 4-5 drinks. Easily doubles (or triples, etc.!)