How about say lego bricks as that is proper way or to reffer to a group of lego. I love my lego bricks i knew this when i was 4 and i don't care what grammar says. Yes i changed from duplo blocks(yeah i know as of late these are bricks to but weren't when i was a kid) to lego bricks earlier then recommended as a child. It doesn't change fact it i bought a box of lego bricks.