Whether you were KILLIN the choreo and serving Britney's lip syncs or slaying Ariana-level runs, we've all been walked in on performing something. What songs did you get walked into on?
For me, tho I basically never do this, the two times I've been belting out some Christina bop, my parents have walked in

Your Body the first time and Fighter the second. (I don't think they heard Your Body, I was pretty quick to stop that)
Also more recently, my mom came in and I didn't hear her so I kept on dancing in the mirror to We Are Never Ever Getting Back Together. Right at the "So he calls me up and he's like..." part too.
