A very small meal consumed shortly after a "normal" meal that didn't quite fill you up enough.
Let's stop at a fast food place for a top off meal...just something small. That last meal wasn't quite enough.
I met a girl at the bar and later that night I ended up topping off the coolant with her.
Some gay ass phrase my brother says cuz he thinks he's funny
"Yeeee! Top off the benz"