Like Seann William Scott and Billy Bob Thornton, and Jonathan Taylor Thomas and Chevy Chase before them, Jonah Hill and John C. Reilly have joined the ranks of sons and suitors sparring in The Great MILF War. In the trailer for The Duplass Brothers' new film Cyrus, we see Reilly drop his Will Ferrell impression in favor of a fresher, more self-referential Seth Rogen impression in order to play a down-on-his-luck guy who woos Marisa Tomei only to be repeatedly c-blocked by Jonah Hill, who plays her adult son. It looks pretty funny and unsettling and avoids the bee's nest to the groin approach to comedy that these movies often cater to. If you're into that sort of thing you'll have to wait for Brendan Fraser's Furry Vengeance. It's the true tale of what happens when a man's hairplugs rise up against him. Check out the trailer after the jump. Or if you're at Sundance, go see the film.