Too Rainy For The Baby Tank.

Too rainy of a day to put the Burger on the bike.
It would not be a responsible thing to do unless it was an emergency.
Like that movie where the guy needs to escape from New York but now he has a little boy strapped to the back of a bike, and he can't really go that fast because the little boy won't stop flailing his arms and head around and slapping the guy's back screaming "faster, FASTERRR!!!"

Just like that.