Good old prankster copycat

I decided to revisit an effective gimmick that used to work in the old times of Black and White, Prankster Copycat Roar Riolu. I think not many people here might know about this, as it doesn't work in later games, so let me enlighten you:

https://replay.pokemonshowdown.com/gen5ou-746020770

Wooooooooooooooooooooooowwwwwwwwwwwwwwwwwwwwwwwww

lol

That's cool! And why won't it work in later games?

I think copycat fails if the last move was roar or something like that.

In case anyone wants to take a look at another funny gimmick (worse than riolu's though), here's acupressure shuckle (keep it mind it was a 1v1 battle)

https://replay.pokemonshowdown.com/gen71v1-746381846

WWOWOWOWOOWOowowOWoowowOOWoWOWoWOOWoOOWowOWowoWOWOWOWOWOWOWow

Oh okay wow!

I tried the Liepard Prankster Assist Lagging Tail two-turn move thing and found it only works in Gen 5!