when a girl only looks good with snapchat filters. Its like terrific, but only with a filter. You can also call their instagram filterific if the only selfies they have are snap filters.
Farterrific is when something smells so bad that people around you are bothered by it and this pleases you, so it's good, but only you are enjoying it. Remember, it doesn't have to be a fart, but it probably is.