Maybe they don't realize their very own bodies are the world's greatest can top vent maker because they are all proper west coast gentmen and not an East coast savage like myself. It's true though, anyone with an arm and an elbow has a built in can vent maker that can be used to make any canned beverage pour easier for faster drinking.
Here's how to do it.
Step 1) Get a can
Step 2) Open said can
Step 3) With said can open take your elbow and put it on the mouth of the can
Step 4) Take your elblow and push into the can mouth. Roll it from the front of the can, the part you drink from, to the back of the opening. You'll hear a crack.
Step 5) Voila , a vented can.
Now everyone can enjoy the smooth pour of a vented mouth can without being forced to buy Coors.
So please let Jeff know, he doesn't need to invent anything and can crack the top of any can he wants for enjoyable chugging.