ideal brother or sister

i administered an english test recently where one of the questions was: who is your ideal brother or sister? describe him or her.

i have heard a variety of great/interesting responses to this.

"my ideal brother is sexy."
"my ideal sister doesn't exist because i don't want a sister"
"my ideal brother is a good boy"
scott in the context of my explaining the trials and tribulations of teaching (and misunderstanding the role i was asking to him play) says when cued simply, "brian clark".