Levi Johnston is getting steamed.
Johnston, 19, stripped down for an upcoming Playgirl pictorial -- and one of the teaser shots has been posted on the magazine's website.
One person who won't be shocked? Levi's almost mother-in-law, Sarah Palin.
Palin, who has dubbed the pictorial "porn," slammed Johnston for "selling his body" in a "desperate need for attention."