Cheese packet opening

I got an Advent cheese calendar. The little packets are a challenge to open one handed. Scissors don't work, that requires a second hand to hold. My Vice-Grips are not sensitive enough to grab without smooshing. There was zero training in rehab on how to use knives. I grab the long tab with my teeth, get a paring knife to punch a hole in the plastic next to my mouth and then slice away from my mouth to open the packet.  My only saving grace is the pocket knife my ex gave me. A John Wesley Powell model, the one armed Civil War major who first navigated the Grand Canyon. Needed because of all the one armed war survivors. 

Advent cheese

You grab the left triangular section and put the butt against your hip or solid surface and the blade pops right open. Sharpest knife I have ever used.