Some years back, I went to a new dentist after mine retired, and I 
was horrified to learn at my first visit that I had many cavities. Since
 then, I've kept a toothbrush and toothpaste at work so I can brush 
after eating sweets.
I have this weird habit of 
brushing at my desk for a bit while looking at work stuff on my computer
 and then taking my toothbrush to the bathroom to finish and rinse. 
Today in the middle of this, a coworker entered my office and began 
talking to me. I had no choice but to feign laryngitis or swallow 
everything. I chose the latter. Really gross.
Maybe one day I'll grow up.