The Moroccan Silkworm is the act of wrapping your wife/girlfriend in clingfilm and farting into her mouth or her nostrils and occasionally teabagging her eyes with your testicles.
Every Five minutes she has an opportunity to escape via a safe word the only catch is to get the safe word she must solve a countdown style conundrum in 60 seconds.
Failure to do so results in a further 5 minutes of fart torture until she can finally crack a conundrum.
"You up to much tonight mate"
"The Mrs drank my bottle of rum I was saving for my birthday so as payback I'm giving the bitch The Moroccan Silkworm"