The ultimate defense strategy, it is a name of four awesome guys that have a pact against anyone that stands in their way. Usually top-d is an acronym for the group of friends, but not always.
The girls totally lost WW3 because top-d was so strong and had a really good prank war strategy.
1. To make a large noticeable error; to fuck something up, especially involving memory.
2. To make repeated errors and be utterly clueless about how bad things get.