Petra arrived home, pissed off.  Ballet rehearsals often upset her.

I hopped into the shower when I heard the garage door closing and Petra snapping at Mom, so that I could shower first.  

When I came out of the bathroom, Petra was stretched out on her lavender carpet, glowering at me.

“How come you don't shower before I get back?" she said furiously.  "Why do you wait until after I come home?  You take forever!”

“Sorry,” I said.  She was right.  But I felt nice and clean.