1 definition by Jon Pan
a combination of the phrases "for real" and "seriously", "for serious" can express agreement when used as an exclamation, it can also be phrased as a question.
Example 1:
person A: "Hey, I got a new cell phone today"
person B: "For serious?"
Example 2:
person A: "That girl is such a ditz"
person B: "for serious!"
person A: "Hey, I got a new cell phone today"
person B: "For serious?"
Example 2:
person A: "That girl is such a ditz"
person B: "for serious!"
by Jon Pan September 10, 2005