No one actually knows what it means. It is a quirky little phrase that most people don't really get to use. Its fun to say.
**WARNING: Do not actualy suck on lawn gnomes, they are a choking hazard**

The art of stealing lawn gnomes

A game played with a group of people, after dark. All of the people in the group go to a random house and ring the doorbell of the house. After ringing the door bell everyone poses and holds still on the lawn infront of the house, as if they were lawn gnomes. The first person to move / run loses.

The act of stealing lawn gnomes from people's gardens

(lihn-zee)Many "Lyndseys" are present in this vast and cultural world. Though this is a particular type of Lyndsey, this general statement can be assumed true for all Lyndsey's that spell their names in this fashion. Lyndsey is a species of lawn gnome. Discovered in April of 1995, about when the species was believed to come into existence, Lyndsey's have an abundance of hair growing on their head, especially out of they're nostrils, ears and upper lip, and sometimes even located on the tongue as with the "Brainerd" Lyndsey. This specific Lyndsey also has hair located in the chest and back area, and a happy trail that tends to "not make men so happy." Easy ways to dispose of these Lyndseys are by stepping on them, eating them, or having rough and vigorous sex with them and then telling them you are actually a boy. Beware angry Lyndseys, they bite.

Crazy midgit with a pointy hat that stalks you in your sleep.

Little, dwarf-like creatures with pointy red hats. By day, you may see them frolick merrily in people's gardens alongside tulips and fresh soil, though at night they are rumored to steal your undergarments, preferably socks. Some believe this is in protest of them being decorative lawn ornamnents.