Don't Yuck my Yum

I'm an Amercian and I've never heard it. Maybe it's something said in California?

well you heard it here first!

But it's not exactly a "grown up" turn of phrase is it?
A bit Bart Simpson, Ferris Bueller.
Very adolescent.

Reading the expression first time I actually thought 'yuck'!
But now thinking about it, understand it better
As I actually say to my little grandchildren that's yuck or yucky.
And I also would say, if encouraging them to eat something 'please try it as it tastes yummy'
Not sure I will use the expression.
But yes suzied can see how might be useful on GN

Sounds like a 3 year old.
As Alima says, also like a request not to put your mouth near the speaker's posterior. Eugh ?

Haven't ever heard this thank God and hope never to!
I would hope that when you say you are spotting occasions , suzied when it should be used, you mean could but hopefully WON'T!!!

I rather hope I won't hear it!

Really do not like that expression which I have never heard before. Get the phrase wrong and it could be very nasty.