To be honest he was Deadpool before Deadpool was Deadpool.

You know, I'd never really picked up on this, but it makes sense now that you say it, even knowing what little I do about comics still.... I did watch the Deadpool movie and there was some familiarity to the character I couldn't quite put my finger on. You're totally right. Looking back, all the times I've seen things with Spiderman in them, he's always making some kind of joke about everything or being goofy somehow... just like Deadpool.