Fi -- Deciding what is important to me and discarding everything. Paying attention to my reactions to things and using that as the basis for a sense of right and wrong. Empathizing with other people by imagining myself in their position.
Ti -- Getting a basic sense of the structure of a system. Automatically noticing logical inconsistencies. Visualizing the flow of a process. Choosing my words with an eye toward clarity and logical correctness.
Ne -- Saying wacky things that usually involve random connections. Drawing links between ideas based on implied, but not very obvious, relationships. Stumbling across something that sparks off a flow of ideas or sheds light on a mystery. Having the answers rush out of me all at once, in a chain of connections that links one idea to the next.
Ni -- Synthesizing apparent contradictions by viewing them from a broader perspective. Detaching from reality to observe things from a universal vantage point. Seeing through assumptions and proposing alternative interpretations that transform the situation. Being aware of how our biases color reality and attempting to remove those biases so that I can make an informed judgment. Letting the answers come to me instead of reasoning them out. Getting glimpses of possible futures. Just knowing things without being able to explain this knowledge (that is, until Ti puts together a rationale, which usually doesn't take long).