I have a friend who got a puppy recently. Unfortunately, she's very sick. I went through that with my own dog and know that it's hard to wrap your head around anything else.
The puppy is named after a blink-182 song, so today's earworm goes out to her. It's not the one she's named after, but "What's My Age Again" will totally work. It's catchy, it's well-made and it's totally fun. That meets all the criteria for a good earworm, so there we go. Get well soon, puppy.