Taxation without representation is when the government forces you to pay for something you don't want, you didn't ask for, you don't support, and very often it is something you strongly oppose.  For example, public education, social security, foreign wars, and medicare.

People should be able to decide on an individual basis whether or not they want to pay for and/or use a government service.  A government should never force anyone to pay for, support, or use a government product or service they don't want or agree with.

That other socialist definition of "taxation without representation" that everyone learns from the socialist public education system is one of the biggest scams ever perpetrated upon humanity.