Time for a tune-up

This afternoon, I was hanging out after a nice walk with Mama, Daddy and Cowboy. I was getting a little hungry, and luckily Mama came to snuggle with me. I started singing, "My milk-drug brings all the boys to the yard..." and got ready to get my fix. I latched on and started sucking, but nothing came out! I kept trying and trying but it wouldn't work. To make matters worse, Mama was laughing about it. I think she must be broken or needs a refill or something.