A complete stranger stopped me at the grocery store to ask if I knew the difference between margarine and butter! I explained the difference and added that I personally always choose real butter. When asked why I told him the story about my grandpa, bird seed and butter. I told him " My Grandpa told me to always eat real butter. He said that once he rolled bird seed in butter and bird seed in margarine. The birds ate all the seeds rolled in butter and none of the seeds rolled in margarine." He liked my story I guess because he put up the margarine he had in his hand, thanked me and replaced it with real butter! That made my day!