Muckraker is in touch, out of the blue, insisting that, No, he doesn't always contact me when he needs favors, but that yes, he does in fact need a favor this time.
He wants me to go pick up a prescription and mail it to him. (It would have been amusing if the prescription had been Viagra...)
Sucker that I am, I'll probably do it. (But believe you me, I'll be calling in favors as well in the next year or two...)