TMZ: Demi Moore inhaled nitrous oxide

(TMZ) - In today's TMZ update, Demi Moore's friend called paramedics Monday night after the actress inhaled a dangerous amount of nitrous oxide ... TMZ has learned.
 
Sources tell TMZ ... one of Demi's friends who was at her home told emergency workers Demi was doing whip-its. A whip-it is a street name for a type of nitrous oxide inhalant.

The friend said she became upset when Demi had a reaction to a whip-it and lapsed into semi-consciousness.

Plus, Lindsay Lohanhas been sued by a nanny who claims LiLo creamed her in a Maserati.

The accident occurred in September, 2010. TMZ broke the story ... a witness claimed he saw Lindsay run a red light in her sports car in West Hollywood, hitting a nanny who was pushing a stroller across the intersection.

The witness claimed 3 of the 4 wheels on the stroller became airborne. The child wasn't injured but the nanny -- Nubia Del Carmen Preza -- claims she was, and that's why she is suing.