"Houston,while you're looking that up, you might recognize what I have in my hand as the handle for the contingency sample return;

VOA: special.2011.05.15

In validation, especially if you have a sample product in hand, the temptation to cross the line from asking to selling is almost irresistible.

FORBES: Are You Making Something Usable? Part 5 -- What to ask?

Only the Kremlin still has an official taster on hand to sample the Russian president's food and make sure it hasn't been tampered with.

MSN: Presidential chefs swap recipes for world diplomacy

Just ask and a salesperson will hand you a packaged sample or fill jars with requested products for free.

CNN: 23 surprising things you can get for free