I don't think that a fffuuucoin or lolcoin would have success in any way.
It's just because of that fucking dog. That's all.
People start laughing reading through the UI of the Dogecoin Wallet.
The risk of this "funny viral oriented" coins is that someday people stop finding it funny and this is where it dies.
Right now nobody knows how long Doge will make it on the viral train.
Other memes have their chance too, but not all of them.
I'd also create some own currency with a high quality UI and overall clean and professional identity with some new viral potential. But that would have been all I could do since I'm no coding guy.
I'm more a creative and marketing guy.
Wanted to offer some people creating their own currency to help them with the visual work. But it seemed like everyone I got in touch with just had a crappy concept or already had a good logo etc. (Which didn't look good at all.)
It's a bit sad that so much alt coins are being developed which don't have any good looking UI / Identity. Most of them don't really offer innovative concepts so the only thing that's left with a standard concept: A creative name and making that shit look good.