Sometimes used incorrectly as the plural for LEGO. It’s definitely a no-no. Anytime you need to refer to more than one LEGO part you should say LEGO Things. For example LEGO bricks.
Here’s a great video from the Velcro brand about why great global brands don’t want you to use their brand names as a noun or verb. If you want to have Oscar RAGE and hunt you down, then be sure to use “LEGOs” when referring to LEGO sets.