We have a biter

When we got home tonight we were informed that Spencer got put in "Time Out" three times while we were on a date to see the movie Unstoppable.‎  I said to Spencer, "Spencer, did you bite the babysitter"....He then replied, "Yep, on the bum".........Apparently, he also bit Kelsey.  Oh my, will she ever babysit our kid again?