After Carly sends Spencer to his room and invites Kyle to hang out for a while, she sits down on the couch and crosses her right leg over her left, then instantaneously in the next shot she has her left leg crossed over her right, then instantaneously in the next shot she has her right leg crossed over her left again.
When Freddie takes T-Bo to his apartment to meet his mother, T-Bo kicks his shoes off. In the next scene, the shoes have moved.