[doc11355]

Some fans of group sex say that it’s better than one-on-one because, as with any collective work, you can skive off,” he said.

He had me there for a minute, until I looked it up...

skive |skīv | Brit. verb
avoid work or a duty by staying away or leaving early; shirk:

[tumblindice]

Same here:
Phrasal Verb: Skive off
Meaning: Avoid doing work or other duty
Example: I pretended I was ill and SKIVED OFF on Monday.

Pretend to be enjoying group sex, while actually practicing your judo moves? What a flake.