I try to sing to Jack but my voice is awful and he probably hears a terrible racket that leaves him almost deaf!!
I sing Skater Boy by Avril Lavigne but replace it with 'he was a tiger boy, she said see ya later boy etc etc...which embarasses the hell out of Kevin, especially if I do it front of other people, cause it doesn't make any sense and sounds terrible!
I mostly just call him in an elongated tune that must sound awful! like Jaaaaaaaackkk a rudi' for some reason I call him Jack-a-rudi and I have absolutely no idea where that came from
Though he also has tons of other names I call him like:
Jacko
Jack the lad
Stripey pants
Sausage
Sausage Pants
Tiger Boy
Tiger pants
Mummy's special tiger
Mummy's special sausage

I also don't know where I got the pants bit from, maybe cause sometimes It looks like he's wearing furry pants

I sometimes call sunny
Sunny Dee Dee
Sunny Didi Pops

I also have no idea where that came from!
Yes I am clearly insane