if they close the door to their bedroom god wont see them drinking, yes i realise obviously it's bullshit but i was told this by a muslim
These people find all sort of excuses. The biggest joke was a gay Muslim's excuse about sodomy. He was saying that having sex with boys are OK, as they don't have beard. Anyone without a beard is a female, and therefore having sex with them is not contradictory to Islam.
IIRC this is not "a joke," but accepted cultural practice in Afganistan and specifically promulgated by certain FATWAs.
You would be surprised to know that this is not just limited to Afghanistan. This practice is very common in all the Islamic nations, even in the previously secular countries such as Albania and Bosnia.