Rod Stewart was spotted at Madeo restaurant in L.A., and he wasn't in the best of moods. Perhaps he was mad that he missed the early bird special.

Stewart, 62, was waiting for his car when TMZ asked how he likes to enjoy life, to which he responded, "What the f**k does it have to do with you?!" The old crooner had more choice words as he got into his car.

Jeez, somebody needs his nap!