You mean like
I woke up this morning
My legs felt like lead
I said, "Good god almighty,"
I might as well be dead."
I've got the blues.
Etc.?
If so, you should be able to come up with something pretty easily. Hell, years ago, I improvised many verses of "The Underwear Blues" for my young cousin. She thought she was going to embarrass me by requesting such a naughty composition, but I showed her: nigh on bored her to death.
To think that same cousin now has five kids. Now there's the subject of a blues song.