There are two main catergories in this sport meatwhacking and schlong swinging; these are two phallus related sports created during the wales trip by the two tom's.
Meatwhacking involves the art of getting a "semi" and beating it against your chest until a nice whacking sound is produced. Originated in a welsh bedroom, in wales obviously
Schlong swinging is the act of rotating the schlong in a vigorous swirl of the hips it originated in a welsh bathroom, again in wales obviously.
Penile Sports in daily life
<THUMP>
oh I hear Tom's meatwhacking again...
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"Toms been a long time in the shower"
"It's all that Schlong Swinging hes been up to!"