Ummm, close but no cigar.
The line on the left is closer to
"You're over pampering yourself."
But, I think in this case, this working is better.

...Yes, I think most people would get the irony by now.

Thanks for correcting my translation error.

"Oh, pot, there's a kettle on the line...."

akun5000 said:
"Oh, pot, there's a kettle on the line...."

I can just see Eirin throwing a (what else) black pot at Kaguya's head.

Say that in front of the mirror

*is about to agree. Realizes he deals with Mooch. Laughs at the delicious irony.*

Look who's talking,

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