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.
oh I hear Tom's meatwhacking again...
"Toms been a long time in the shower"
"It's all that Schlong Swinging hes been up to!"