There're aren't many funny nicknames for Christine but these are some:
Christine's father gave her the nickname 'sweet cheeks'. Quite a lovely name, eh?
Belly!
Maybe Birtha?
dumb brunette
pepper
Abowlo
emmerlina
nates natey
Yep short for Christine
funny amendment
shnookie,mama cahula,the great babushka
A nickname for Seymour could be "Sey" or "Mo".