ManBabies.com: Terrifying. Amusing, Yes, But Terrifying.

If you have not yet subjected yourselves to the awesomely-disturbing ManBabies, then you’ve not yet fully lived.
In brief, pictures featuring fathers/grandfathers/older gents and young children are head-swapped/-Shopped, resulting in images like the above.
Go ye and bask in the surreality.