Here’s a song using the idiom “Under the Weather,” brought to you by Sesame Street:

I’m Under the Weather Over You

by Polly Darton

Oh, I’m under the weather over you
It’s been raining since you told me we were through
You’ve been awful underhanded
And I just don’t understand it
Yes, I’m under the weather over you

Oh, it’s freezing and it’s snowing in my heart
You were cold when you told me we must part
When you said I had to go, ma’am
You were icy as a snowman
Yes, it’s freezing and it’s snowing in my heart

Oh, my tears are falling down just like the raindrops
That sprinkle on our heads from clouds above
When you rushed me out the door like a tornado
Like a hurricane you blew away my love

I’ll be happy when this thunderstorm is through
When the sun might shine again I was I knew
And if I ever meet you, fella, I’ll just put up my umbrella
Because I’m under the weather over you – achoo!
Yes, I’m under the weather over you

we were through = we broke up
underhanded = unfair
fella = fellow, guy, man