That sucks

suck

1. rude slang To be very poor, inferior, or worthless. Wow, that movie really sucked! This place sucks—can we go home yet? Boo! You guys suck! Get off the stage!
2. rude slang To be displeasing, unfortunate, or undesirable. A: "I'm sorry, but the charge is non-refundable." B: "Well, that really sucks!" I know this situation sucks, but we've just got to deal with it the best we can.
Farlex Dictionary of Idioms.

That sucks.

 and It sucks.
Sl. That is worthless. Yuck! That sucks! This meat loaf is terrible. It sucks.
See also: suck, that
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

That sucks

and It sucks
in. That is worthless. This meat loaf is terrible. It sucks.
See also: suck, that
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • suck
  • suction
  • suck off
  • suck the kumara
  • boo
  • boo bird
  • boo-bird
  • sucking
  • go
  • say boo