Not exactly. The Tifling class's features are built around the WooHoo system, but WooHoo is available to all hero classes.
1. WooHoo can be used on any sleeping enemy (except bosses) from a distance of 1 tile.
2. There is a WooHoo potion that can be used not only on enemies.
3. You can find a magic wand that applies the WooHoo effect.
4. You can find an enchantment for weapons.