It means "that's bad"
Was ist das = what ist that
Das ist = That is.
"That is not" is "das ist nicht" in English.
das ist literally translates to 'that is' you woudl not use it on its own but in a sentance. i.e. Das ist super! That ist super! or Das ist mein hund. That is my dog
Das ist Leben = That's life! (although the more common version is So ist das Leben).
"ist das dein" basically means "is this yours"
"Welcher Tag ist das?" = "What day is it (today)?"
"Was ist das?" = "What is that/it?"
Das ist nicht wahr = That is not true
"What is this?"="Was ist das?" (if it`s meant as a question).
"Das ist gut" means "This (or it) is good." in English. It's basically said to show approval of something, or agreement.
Was ist das was created in 2006.