1. To really enjoy the entire experience of a delicious meal or food. 2. When a food or a meal is so
yummy that it makes
one feel very very happy. 3. When on really enjoys the flavor of a food or meal. 4. To be overtaken by flavor.
I just had the most marvelous
burrito for lunch! It was a total yumfuck!" or "Wasn't that
casserole a
real yumfuck?!" or "Thanks for these delectable brownies. They are yumfucking me!