at the top of your lungs

US /æt ðə tɑp əv jʊər lʌŋz/
UK /æt ðə tɑp əv jʊər lʌŋz/
"at the top of your lungs" picture
1.

as loudly as you can

:
•
She screamed at the top of her lungs when she saw the spider.
•
He sang the song at the top of his lungs in the shower.