What you need to get a job but can't get a job until you have.

"allow it" means to just leave something alone, or don't worry about it. People in West London say this quite often.

Those learned behaviors which prejudice against re-marriage.

Experience / knowledge gained by virtual means. Depending on the topic of study, can be equally or more effective than experience gained IRL.

Pronounced "eek-sperience".

Participating in something so many times, that they have learned a lesson in it.

If you have it, you don't need it.
If you need it, you don't have it.
If you have it, you need more of it.
If you have more of it, you don't need less of it.
You need it to get it.
And you certainly need it to get more of it.
But if you don't already have any of it to begin with,
you can't get any of it to get started with,
so you have no idea how to get any of it in the first place.

Bottom line,

If you've never had any of it...ever. People just seem to know.

A sexual act that was, for lack of better words, weird.