My youngest did something similar and in the middle of the assembly. And just so happened that she timed it perfectly and everyone within earshot got to hear it and turned around.
We get to the assembly. She used to sleep thru most of it. When we get up to sing for the morning break, she wakes up. Wife took the chance and got her to stand up and sing. She rubs her eyes and asks
"Are we going home already?"
Mom replies "no, not yet"
After the end of the morning session, we get up to sing again, before heading out for lunch. My girl wakes up again and asks "Are we going home now?"
Mom replies "No, we are going to lunch"
Daughter- "And then we are going home?"
Mom- "No"
Daughter- "Ugh! I hate this samblea" -(Baby talk for Spanish "Asamblea")