There are many that have amused me. The Newcastle fans used to sing,
his name is Merindinha,
he's not from Argentina,
he's from Brazil
he's f*cking brill
Player songs are short and usually re-used for different players in a kind of <insert player's name here> kind of way, so invariably a bit ho-hum... but I did like Liverpool's "he's fat, he's round, he bounces on the ground, Sammy Lee, Sammy Lee" and (for some curious reason) Man City's "Mick McCarthy, Mick McCarthy, la la la la la".
My fave fans song has to be (naturally) Leicester's "when you're smiling" ... but they also have one that always makes me smile.... "we've got a song that'll get on your nerves".... repeated quickly, monotone ad infinitum!