en la cepa de la oreja

Question

Has anyone heard this expression - en la cepa de la oreja. I understand it literally, but I was wondering if anyone had a good equivalent in English.

Answer 1

Thanks for the response, but it's being said in a casual way in a conversation where somebody's angry. So it's most probably a bit of slang.

Answer 2

Creo que hay cepas de ratones con orejas manipuladas por ADN. ( Sorry if this sentence is not clear, help appreciated) . Para ayudar al progreso de las ciencias.

I think there are strains of mice that have had the DNA of their ears altered. In the name of progress and science.