Maybe it is in the gutter...

For those of you who get disgusted easily, I suggest you ignore this post. I've prolly already scared away more ppl than I can afford to. I should also say not suitable for young children, but they prolly know more than me anyway. So yeah, I've got a friend who has perhaps a questionable mind and would once in a while say

Long and thin gets it in,
but short and thick does the trick.

or some variation of that... Well, it made me think of

Fast and rough gets 'em up quick,
but slow and gentle gets 'em out thick.

Not as eloquent nor optimistic as the first one, but meh, it rhymes...
Damn, I've gotta stop thinking about po- etry... Poetry.