As everyone knows, a couch is made of a wood frame with various types of wire springs, stuffing and fabric. Even so, Magnum flips over a couch and hides behind it. Then, when it is sprayed with machine gun bullets, flashes are added to the video of the couch, implying that the bullets are bouncing off. This is not the first time that this "bulletproof" couch idea has appeared on Magnum. Earlier in the season Magnum made a "bunker" out of the couches at Robin's Nest for the same purpose.
When Magnum tells T.C. that Rick was arrested for murder, T.C. responds by saying "Rick Orville Wright" instead of Orville "Rick" Wright which is more appropriate since Rick is his nickname.