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Sneak Peek! Carrie Underwood Kisses a Pig on 'How I Met Your Mother'

02/24/2010 at 11:00 AM EST

In a first look at Carrie Underwood's guest-starring role on How I Met Your Mother, the country star puckers up and smooches a teacup pig!

Underwood, who donned a flight attendant's uniform as part of her time on set playing Tiffany, an enigmatic pharmaceutical sales rep and love interest for Ted (played by Josh Radnor), wrote on her Web site that the pig pooped on her.

"I got to hang out with the whole cast, dress up like a flight attendant, play a cavewoman and had a baby pig poop on me ... that's right ... jealous?" Underwood said. "I'm just glad I grew up on a farm because I think I was the only one who knew how to hold and wasn't afraid of a little piglet!"

In a clip from the episode (above), Radnor leans in toward his new ladylove for a kiss. But Underwood stops him by saying, "Do you know who else would love this teacup pig ... my boyfriend." Sounds like we have a cliffhanger on our hands!

How I Met Your Mother airs Mondays (8 p.m. EST) on CBS. Underwood's episode is set to air in March.

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