They only have eyes for each other.  They think each other's nose is the sexiest thing in the world.   They are oblivious to almost everything else.  Naive and awful parents to the twins.

Great Great Great  Grandfather.   He's constantly quoting family traditions ... All distasteful and meaningless.   They humor him but never take his advice.

Bevis and Butthead gone bad.  Farting, belching and picking their gigantic nose is their life. 
Everything parents hate!
Everything Kids love!

Nosetalgia's snooty cousin always has her nose in the air.  She thinks she's hot stuff but she's boring, boring, boring.