1. The application of hand sanitizer (from the base to the tip, hence the name) to ones genitals before or after a particularly questionable bout of intercourse (though a post-coital 'base up' is less likely to result in unwelcome friction).
2. In reference to the sexual encounter itself, whereby you engage in risky business and will likely require the application of 'Base Up' in the near future.
3. As a noun referring to the sanitiser itself.
"I didn't use a condom, better base up"
"Should we base up before going to the clubs?"
"Who used all the base up?"
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.