"Geez, Shizuki, I need some help here.. my sarcasm attempt was completely stomped.
Any advice?"
Try using the word "really" a lot, and put it in italics, with some extra l's. Like this:
"I think kpaul is realllllly on target with this. He's a realllllly logical guy with a realllllly firm grasp of reality. Realllllly."