你妈

你媽
nǐmā
  1. (interjection) fuck you
  2. (intensifier) fucking

CEDICT

Entry Composition

=1 你 nǐ you (informal, as opposed to courteous 您 nín)
=1 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
2 妈 mā
  1. ma
  2. mom
  3. mother