many (many) years ago, before our boys grew up:
we always spent christmas eve at hubby's sister's house. it was at night, since people still had to work during the day. after food and presents, we would end up playing cards, trivial pursuit, etc, while the children played with their new toys or dozed off.
bundled up the boys, drove home, put out cookies and milk for santa, carrots for the reindeer. put the boys to bed. lied down in bed ourselves, just about to doze off, when I SAT UP UPRIGHT! "OMG! STEVE>> SANTA!"
ran down to put the presents under the tree, fill the stockings, etc.
I'm embarrassed to say, santa ALMOST forgot to come that year!
yeah, I laugh now, but it would NOT have been funny!