What does it mean when someone calls himself "non sequitur"? [closed]

Solution 1:

They are trying to give you the expectation that things they say will have no connection to anything that other people are saying, nor even anything that they themselves have previously said. If some folks are talking about their favorite cheese, Mr. Non-Sequitur will feel free to barge in and say something like "I want the sun for my pet." Which has absolutely nothing to do with cheese or anything else that anyone was saying; it's completely random and unconnected. If someone then asks why he wants the sun for a pet, Mr. Non-Sequitur will be perfectly happy to "explain" by saying something like "It's a good day for making snow forts in my basement." (Which, again, is totally unrelated, random, and rather nonsensical.)

Solution 2:

They're using it as a synonym for senseless or random.