tanning sock
putting a sock over your weiner to keep it from getting sunburnt while tanning.
i used the ol' tanning sock to keep my giblets from roasting
English yam with a sock tan
A fairly ordinary english person with an uneven suntan on her or his ankles caused by wearing socks while out in the sun.
Juno Temple interview published the Guardian on 23rd June 2012 where she describes a nude movie scene she played in the film Killer Joe with Matthew McConaughey:
"And he gets to keep his kit on and I'm like a fucking English yam with a sock tan."
"And he gets to keep his kit on and I'm like a fucking English yam with a sock tan."