(n) Gonorrhea a.k.a. "the clap" with a spanish twist. Slightly less severe than "the clap" because of the cool european influence.
One of the manifestations of el Clapo is how the tightness of clothes switches with both guys and girls. The male pants become considerably tighter, whereas the female pants get increasingly baggier. This trend is common to other articles of clothing.
Man, Steuart did it with that stripper from Barcelona and got el Clapo. It's kind of wierd, he wears tight shit now.
Maddy started wearing those genie pants as soon as she got el Clapo.