A Gruesome Twosome American British noun phrase
To indicate a pair of people or things as in tandem
Jenny and I are considered as a gruesome twosome due to our intimate relationship.
Well, the gruesome twosome is coming! Quick and join us.
My sister and Linda are a gruesome twosome, they are unlikely to separate from each other except for school time.
To match, compare or pair something with something.
A extremely unlikely or mismatched pair of people.