DD is 16 months and will generally nap for 2-3 hrs in the middle of the day, unless she gets woken up, in which case she seems to think she's completely refreshed regardless of how little sleep she's had.
This morning we've been out to the local shopping centre so she could walk up and down with her mini-buggy thing and get nice and tired. Brought her home, changed her nappy, fed her to sleep. She was asleep within ten minutes and snoozing peacefully in her chair. Five minutes later the phone went. ARRRRRGGGGHHHH! AARRRRRRGGGGH! AAAAAAAAAAAAAAARRRRRRRRRRRGGGGGGGGGHHHH!
She now thinks it's playtime and is dashing around the floor pretending to be a lion and talking to her shoes. I have so much to do and am actually going to cry if she doesn't go back to sleep