This phrase is often used for when you're irritated at someone. However, this phrase could also be used in a positive way depending on the circumstance. This is a famous phrase and has been used by a legend (Gordon Ramsey).
example 1: Stop it amreen you're getting on my 'Yankee Dankee Doodle shit'
example2: What a lovely day, it must be a 'Yankee dankee doodle' day
example2: What a lovely day, it must be a 'Yankee dankee doodle' day
by Yankee Dankee Doodle Shit April 20, 2019