Bring Your Own Tug Job.

Some restaurants or parties are BYOB, meaning you can bring your own alcohol and shouldn't expect to be able to buy anything there.

Similarly, a venue or event can be BYOTJ, meaning that if you want to rub one out there, you're going to need to bring the necessary ingrediants (willing party, lubricant, tissues etc) yourself.

Adj. Something that is expected to have a long lifespan by virtue of having existed for a long time, based on the lindy effect, named for the New York restaurant Lindy's, coined by Albert Goldman and popularized by Nassim Taleb.