The act of impersonating critically acclaimed actor/governor, Arnold Schwarzenegger by means of quoting lines from one of his many movies and/or imitating his distinct, Austrian accent. It is a very common trend that has has appeared many times throughout popular culture such as in cartoons and television shows. It can usually spark a series of Arnold Schwarzenegger impressions if done around a group of people who are familiar with said schwarzing.
Guy: "HEHEHAHH!! HONEY! LOOK AT MAH MOSCLES, DEYAH BULGING WEET SUCH FEEEUUUURRRYYY! HEHUAAGGHHH!!"
Girl: "..really sweetheart? You've been schwarzing
all afternoon..maybe it's time to give it a rest."
Guy:"IT'S NOT A TUMAH!!"
Guy:"GET TO DEH CHOPPA!!!"
Random Bystander: "HEHEHYAAAHHH!! I HEARD YOU SCHWARZING
FROM OVAH DEUH! MIND IF I JOIN?!"