Oh man... I keep forgetting not everyone in this thread is from Western Pennsylvania. You're not very far off.
Beer cheese is basically cheddar cheese melted down with beer in it to make it a sauce (vs. nacho cheese which is cheddar melted down with milk and water)
Chipped chopped ham is the cheapest ham money can buy, you get it "chipped" or "chopped" which means sliced as thin as humanly possible, then you cook it up in a vat of Heinz ketchup, brown sugar, mustard, worchestershire sauce, and butter. Dont know about Laz but I this sh1t was a regular staple in my house growing up, and its a Steelers tailgating classic.