thankyouverymuch
a remark one says when one has strong evidential proof of something and wants to rub it in another's face
jill: i saw you kissing my boyfriend
meg: no, you are wrong! I was having a threesome with him and your best friend, thankyouverymuch!
meg: no, you are wrong! I was having a threesome with him and your best friend, thankyouverymuch!