Have the rose jump as you offer it to a lady. Or have it jump, as you attempt to smell it, and hit you on the nose or chin.
Or tell the children that when you water plants and flowers they grow, picking up a small plastic watering can, the stemmed flower is sprinkled. The flower stem suddenly rises from the hand. No real water is required here, just pretend.
We supply you the very realistic rose, ready to go, with several ideas by Ian Adair.