I used to use this (still do really) as a technique when starting undergraduate lectures. They’re there, ready to listen, but chatting away and need a moment to focus their attention.
*SO* let me tell you further fun facts about carbonyl chemistry…
Works. Those Anglo-Saxons knew what they were about.
> SO let me tell you
all about how...
Oh no, now my brain wants to play the whole song in my head before allowing me to move on.
I remember one of my friends in college pointing out before lecture that the professor would always start by saying "OK, So."