A fan on BritneyForums.com was at the Britney Spears concert in Phoenix last night, revealing that the singer was involved in a mishap during her performance of ‘I Love Rock ‘N’ Roll’. The moving stage stopped and Britney couldn’t bungie jump down from an elevated perch, so they had to get a ladder to get her down. The show stopped for a few minutes while they got her down. Meanwhile, opening act Nikka Costa raised the eyebrows of parents in the audience when she asked how are all the bit**es. Nikka told the parents to chill because she cursed.