The act of taking a bathroom trip in which you need to
crap when you're with company but
don't want them to know you were taking a
crap. It involves the preparation of wadded-up toilet paper placed on your lap while your feces is already on the
way out. This maximizes efficiency and reduces the time you take to unroll and wad the toilet paper, making what could have been an awkward moment after your party has been waiting for you. For all they know, you just made a tinkle.
I met this
girl for dinner last night. I had to shit so
bad, but I didn't want her to know that I pooped. So instead, I
took a quick shtinkle.