A man with a penis so large he could strangle a whale with it. He tends to also be very funny caring and kind but can be extremely dangerous when angry.
The definition of a guy with an abnormal large forehead. Not because he is smart but for protection against the pouring rain. People often use a Jakob as an umbrella and can be refered to as a [gutter[
"Oh no! it started raining again..."
"Quickly grab Jakob he can cover us from the rain with his massive forehead"