"Oh, Merlin, this garland of death is cutting off my circulation," James declared dramatically, "Not just ... to my arm... but my entire... body." He clutched his chest and staggered, though he started to laugh briefly and quite (un)successfully turned it into a cough as soon as he could.
"World... growing dark..." he tossed the rest of the tinsel he was holding into the air and then dropped to his knees before sprawling, face first, onto the floor.
It might've been convincing if he hadn't been grinning almost the entire time. Theatrics done, he lifted his head and opened one eye to peer up at his mate before feigning a groan and 'dying' once more.