The affliction of spending too much time boogie boarding, or sea activities until it inflicts you with a case of kelp in or on your genitalia. Whilst looking and smelling horrible, it somehow fascinates the females of the species.
Tobes: Migs, come on man - stop surfing we've got to go hit the bar for TSBs!!
Migs: Nah man, chicks will dig my Kelp Dick ! Give us ten minutes