A Nigel

A situation where, after a sensible comment has been made, the receiver understands little or none of the comment or its context. Often ending up in a lengthy re-examination of the original comment at great distress to the issuing party.

The act of following a perfectly valid comment that would ordinarily spark debate with an idiotic question, thus derailing the entire conversation.

When fuck things up so bad that you can't figure out WTF you did. Then get frustrated with world!

An ailment that prevents the afflicted from attending work. Over a period of time the sufferer concocts increasingly unlikely stories of obscure medical complaints that keep them from work, whilst strangely maintaining their ability to participate in physical outdoor pursuits, like say mountaineering.
When contacting their workplace to report their absense, the sufferer often greatly embelishes the details of their complaint in order to raise plausibility, whilst ironically achieving the exact opposite.

When you do something by yourself. The art of being a nigel.

Compassionate. Friendly but sometimes bully. Has difficulty in expressing her feelings vocally. Hates confontations. Willing to sacrifice everything for love. Masochist.

To be excluded from a group

I believe it came from Australia
Often used by young people in US to mean someone is/was excluded from a group usually as soft punishment

A NIGEL (usually written in capital letters) is a name for a person who is unbelievably fantastic that everyone should know or already knows about that person.
A NIGEL AFFECT (once again, written in capitals) is the name for a particular person who is unbelievably fantastic AND can win against anyone at anything.