Makes me think of when I used to give my kids a countdown ultimatum. "You better do it in 3, 2.... 1 & 1/2.... 1 & 1/4..."

For those of you yet to have kids, the secret is to count up and every number escalates the penalty, that way they also don't know when you'll stop counting and takes away the boundary they're pushing. (This is not professional advice and i take no responsibility for your future childs trauma )