RAIN ON MY PARADE

Sergio,

thanks for your interest in my blog. But let's get down to business.

RAIN ON MY PARADE is an expression that means 'spoil my plans'

e.g.

Don't rain on my parade. I have plans to visit my folks on the holidays.

or

Get ready for me love
'Cause I'm a "comer"
I simply gotta march
My heart's a drummer
Don't bring around the cloud to rain on my parade

Bobby Darin - Don't Rain on My Parade Lyrics

also, you can say:

don't burst my bubble. got it?