4PP stands fro 4 Player Podcast,which is totally hilarious!Smosh is a web show made by these two guys,Ian and Anthony.Both can be found on Youtube,and are unbelievably funny! (Though if you want to check them out,be warned:they are very,very inappropriate.Nothing to show your younger siblings).
I know a very small ammount of people who watch Smosh,and no one except my cousin for 4PP.
Smosh is bascially randomness.Thye do many things,from parodies,spoofs,and just them eating lunch and beinv stupid.4PP is a podcast cebtered around videogames,where 4 guys basically commenting on games as they play them.I would suggest you start watching for Brad videos,because they're awesome!
I hop that someone here enjoys them,or that I can persuade thsm.