We must have done something good in a past life, because Britney Spears [1] agreed to be in one of Jimmy Fallon [2]'s "Ew!" sketches on Thursday night. The iconic pop star [3] traded in her usual giant yellow snake for a pineapple print crop top to play Abby, a long-lost camp friend of Sara's (aka a blonde wig-wearing Fallon). Her appearance includes lines like "I'm still superobsessed with horses," as well as an impromptu rendition of her hit song "I'm Not a Girl, Not Yet a Woman." It might not be as hilarious as seeing John Cena in a ponytail and bright blue leggings [4], but it's still pretty priceless. Watch it above!