Dailies | Seth MacFarlane Calls Charlize Theron's Son ‘Little Republican’ (Video)

It comes down, quite simply, to the two-year old's love of the word, “No.”

Charlize Theron and Seth MacFarlane have spent a lot of time together recently, during the film shoot for their upcoming comic western, “A Million Ways to Die in the West.” During that time, Theron had her young son on the set, and apparently the two-year old made quite an impression on MacFarlane, as he gave the tyke a nickname.

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“Seth calls him ‘The Little Republican,” Theron said on Wednesday's episode of “The Ellen Degeneres Show.” Even MacFarlane had forgotten the reason why he came up with the nickname.

“‘Cause he's just always saying, ‘No,'” Theron explained. “Everything's, ‘No.’ … He's a little slow on the speech, but he's hitting the ‘No’ really well.”

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“A Million Ways to Die in the West” co-stars Charlize Theron and Seth MacFarlane, who also wrote and directed the Media Rights Capital, Fuzzy Door Productions, and Bluegrass Films co-production. Distributed by Universal Pictures, the movie also stars Liam Neeson, Amanda Seyfried, Neil Patrick Harris, Giovanni Ribisi, Sarah Silverman, Gilbert Gottfried, and Christopher Lloyd. Produced by MacFarlane, Scott Stuber and Jason Clark, the film opens in theaters on Friday, May 30.