Mitch covered Special Pleading and Cherry Picking, so I'll cover Red Herring.
If someone is losing an argument, one tactic they often like to try is to derail the discussion by throwing out something that leads the discussion elsewhere. Like, say for instance you're losing the argument over gay marriage so you inject comments about abortion into the discussion so everyone will start talking about that and forget how weak your stance on gay marriage is. It's often used if the person thinks they have a better chance at winning a different argument.
If someone is losing an argument, one tactic they often like to try is to derail the discussion by throwing out something that leads the discussion elsewhere. Like, say for instance you're losing the argument over gay marriage so you inject comments about abortion into the discussion so everyone will start talking about that and forget how weak your stance on gay marriage is. It's often used if the person thinks they have a better chance at winning a different argument.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.