Well, this guy just looks like a pervert in the making, but....he has a use.
Belly Drum
Thief
Rest
Rollout(will be replaced with Explosion)
EVs: 252 HP, 160 Attack, 96 Defense (maximize HP, give a good hunk to Attack, and give to defenses based on IVs/Nature)
Lickilicky is the only Pokemon that gets a STAB from Explosion, which already has 250 power, so that's 375 power after the STAB. Belly Drum maximizes your Attack stat, which means physical attacks have their power quadrupled. So that 375 power becomes 1500. Now have it hold the Normal Gem to double that. 3000 power with a single attack. There is no typo there, my friends. 3000 power is still 750 with a 1/4 resistance, and 750 is the equivalent of 5 Hyper Beams. Catch your breath while I tell you how to get this A-bomb.
1) Breed a female Lickitung that knows Rollout with a male Snorlax that knows Thief, Rollout, and Belly Drum. Aim for the Ability Own Tempo and a Sp. Attack-lowering Nature.
2) Raise the baby Lickitung to lv2 and replace Rollout with Explosion via TM48.
A small flaw is that Explosion is Normal, so it cannot affect Ghost-types. However, Thief after using Belly Drum has 160 power, and is super-effective against Ghost-types, making it 320 power, so that helps with that. And it helps that Ghost-types are more about their offenses than their defenses. Rest is there for support against those scarce defensive Ghost-types.
This is essentially a one-hit KO for the enemy, and is useful against those Pokemon that just won't die(have you ever fought a Milotic? Those guys are nearly impossible to kill in my experience).
Is it semi-clear I'm a fan of sacrificing my own men to inflict damage on the enemy? Would you believe I'm not Japanese? Was that racist stereotyping? Do you have any questions or comments? Here's a hint: the answer to all of those questions are the same.
Brock out.