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(Idiom) shout or scream as loud as someone possibly can
"I wanna scream 'I love you' at the top of my lungs, wanting the world to hear it."

"I did too much thinking today and felt very frustrated, so when I went for a drive in my car, I just screamed at the top of my lungs many times"
by zallynn September 07, 2009

Words related to At the top of my lungs

clamorous earspliting loud noisy stentorian