1) A warmonger. Someone who views war/violence as the best, if not only, means to solve conflict.
2) An morbidly obese, impossibly ugly woman.
3) A wartime Placebo. Be it a bigger, faster, prettier, more advanced, or simply more expensive rocket, gun, bomb, vehicle or other device.
Note: A Warpig does NOT have to be more effective in practice, just make the owner/user feel more confident.
1) "Hey, you hear the latest about <Terrorist Leader>?"
"Oh that warpig?"
2) "She was built like a tank with a face only a mother could love."
"Oh man, sounds like a real Warpig."
3) "See Dick's new Warpig?"
"What; he got another new gold-plated gun?"