Consent is a simple topic.

[lumberjack_jeff]

When my friend watches me pour a cup of coffee from his percolator and doesn't express any misgivings, objections or complaints, it is reasonable to conclude that he's giving implied consent, notwithstanding the power differential of the fact that he owes me money.

A jury would never use the lack of a clear "yes you may have 8 ounces of my coffee" to conclude that I'm guilty of theft.

"You should have known without my saying so that I had a headache last night." Doesn't meet my definition of rape.