What is Dip Dip?
1.
The word dip dip is used to describe some one when they do/ say something dumb.
"Don't gallop into the horizon that beckons your name dip dip! "
See
2.
the sound one makes when inserting ones nuts into anothers mouth; see The Teabag.
"Oh man, you got hosed! Dip Dip!"