A gift idea for someone who may be lacking in the "your funny" department.  An encyclopedia of Immaturity will keep their friends in stitches.  Full of jokes and gags like the old favorite of how to hang a spoon from your nose. 

Seriously, who would love this gift?  Men, all men, men of all sizes and types.  Who not to give this gift to;  men, all men, men of all sizes and types.  Most men don't need any help in learning how to never grow up, it comes naturally to them.