The act of taking 4 shots of whiskey in under a minute
"Last night I took an Irish Lullaby before the party"
by Big Richard 6T9 November 1, 2018
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'darling, you are up late enough to see the milkman!'
'im having a broadway lullaby zzz'
by Troll face McGee January 7, 2022
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A short period of calm or pleasant circumstances that is all but guaranteed to be followed by a severe change for the worse; usually preceded by less than favorable conditions,
I can’t believe it’s going to be 70 degrees for the few days! It’s December!

Be careful. Don’t get pulled in by the Nebraskan Lullaby. It’s definitely going to snow next week.
by Kscooby November 16, 2021
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When somehow a simple annoying song can take you all the way through your musical theatre singing exam to LCM grade 6 or up
Paula: "Why don't we do White Cliffs of Dover! It can take you all the way to grade 6!"
Dan: "Thats just The Lullaby of Broadway Effect!"
Brook: "Yeah It Is!"
by SondheimSimp April 28, 2022
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