"Dear Lord, please bless...oh never mind, even you wouldn't bless this slop" and "Bless this food before us set, it needs all the help that it can get" are funny prayers to say before meals. "Good food, good meat, good God, let's eat" is one more funny prayer.
Prayers before meals are to give thanks to God for the food that is about to be eaten. They can be long prayers that talk about all the good things God has done or a plain thank you to God for the food. They are serious, heartfelt or funny. Prayers before meals are traditional in religions such as Christianity, Islam and Hinduism.