One may travel many
shag miles to have sex with the right person. However, some
people are either fortunate enough to have their sexual partner nearby.
Others, though, may simply be lazy or unimaginative and find or remain with their sexual partner simply because they are close to er.. hand. This is a "proximity
shag" (noun and verb).
A: We split up because he is too many
shag miles away. You on the other hand...
B: ...live next door. That makes me a...
A: ... proximity
shag.
B: I suddenly don't feel very
special.