When you are in a manual transmission vehicle, and you shift from 2nd gear to 4th or 5th, or 1st to 3rd. Typically works best if you are going down a hill.
When you are happy to pay for situation or circumstance, or benefit from it in one way or another which outways all negative aspects.
"It's a completely taxic relationship, but I love him/her."
"I live in a taxic relationship with my government - I pay them and they give me everything I need."
A phrase used to describe a person who's ears stick straight out from their head (at about a 90-degree angle) and are usually quite large in size as well.