Like much of animal altruism, this is actually a long-term insurance policy, a favour which is expected to be reciprocated when the time comes.
The president said he expected Mr. Cameron to reciprocate by teaching him about cricket.
There is one curious difference between Mr. Blagojevich and many other products of an unseemly political culture, in which you look out for your buddies and expect them to reciprocate.
I was scared of how they would expect me to reciprocate if I accepted their help.
Nor does he expect them to reciprocate by purchasing the next release of Windows.
People hold out their fist or hover their hand in the air, expecting you to reciprocate their juvenile greeting.
He added, "Larry does sometimes interact with people in a debating format, and expects them to reciprocate and to be able to engage in an intellectual tennis match".
They don't think in terms of "reward," or expecting you to reciprocate.
She is likely to flirt with others and expect them to reciprocate, some even take it further.
