Sleep with vibrator on

My friend and I were having a discussion about our toys the other day. She told me a story about one night when she was exhausted from the baby and her job, she just wanted one good orgasm before bed. Her hubby was out of town on work, so she pulled out her bullet. She said she remembers turning it on and placing it on her, but must have fallen asleep. A few minutes later she woke up to an intense orgasm. Apparently, she loves doing this now and purposefully tries to go to sleep and wake up to an orgasm from her vibrator. Anyone else do this or know anyone who does this? I've never tried, but could be interesting.