YIKES!

Tegan
I was just using my new vibrator, gettin' into it and having a good time when my dad walks in to tell me he moved my car to a different spot in the driveway for some reason.
While I was mid-orgasm.
Lights were off, music was playing at a decent volume to cover up the vibe, but he walked in on me arched-back, sex moan and all.
How do I handle this? Don't mention it? Be proactive and be like "Hey, oops." or wait and see if it comes up? HELP!