This may sound harsh, but actually my kids don't mind it because they know I am doing it out of love. I never do this in a spirit of anger or retribution. In fact, it makes my kids more secure and happy. I use this game to teach them to move quickly. After they have learned this I begin to discipline them for moving slowly, even if I am not counting.
Uncooperative slowness is a symptom of lazy rebellion.
When this manifests itself I use the teachings of the proverbs in the Bible regarding the rod and reproof. As the children get more practice following the morning routine, it will take less time. I will never forget waking up one morning after my husband and I had been out late, and realizing that I had slept in. I imagined the kids running around tearing the house apart in their pajamas. I dressed as fast as I could.