For a little Halloween promotional fun, Lyft is delivering zombies to your door today, for free. "Liven up a dead party! Activate a sluggish meeting!" says the promo.

Yes, you can have a real, live (costumed) walker, delivered by a Lyft "handler" and probably removed before you get bored of him/her, for $0. Just open the Lyft app and select "Zombie."

The promotion is running until 8 p.m. tonight in SF and NY, and below, some Twitter evidence.