I Don't Know - song lyrics 
American Old-time song lyrics from www.traditionalmusic.co.uk 
I DON'T KNOW. Copyright, 1890. by M. Witmark & Sons. Written and composed by Arthur West. 
When a young man begins a mustache, Nearly of age and has plenty of cash. It's a thousand to one he goes out on the mash And lots of young girls in his eye; Flirting and dancing at ev'ry ball Till he meets one he thinks fairest of all; In the Conservatoire why does he fall On both bended knees with a sigh. 
Chorus. I don't know, what is the use of inquiring? I can't tell, a puzzle it always will be; he can't get a wink when to bed he does go, Can't eat his dinner and feels very low; What does he do it for? I don't know, So it's no use your asking me. 
How he hangs round on Sundays for tea, How quite by accident every time She manages " just to sit close by his knee. And closer and closer they sit. Will you take some more cake, dear? she answers him no-One small cup of tea, she so delicate, oh, And though he's hungry as any old crow, How is it he can't eat a bit? 
Causes. I don't know, what is the use of inquiring? I can't tell, a puzzle it always will he; On Sunday he takes hei away for a row, Far up the river he pulls very slow; What dots he do it for? I don't know. So it's no use your asking me. 
Father gets angry, there's bother one night; Mother says things that are hardly polite; Poor Adolphus to set matters right Must marry his treasure and joy; Twelve months after that he comes home to tea In a nice little home, just as neat as can be, And, strange to relate, though a puzzle to me, He's nursing his dear baby boy. 
Chorus. I don't know, what is the use of inquiring? I can't tell, a puzzle it always will be; When a smart little fellow's no longer a beau, But off to the church with his sweetheart must go, What does he do it for? I don't know, So it's no use your asking me.