When someone gives you a bag of groceries and it feels like there's a few things missing because the bag feels a little light. So you go back to get the rest of the groceries. When someone hands you speed (Amphetamine, Ethylamphetamine) after you paid
money and the gram of speed feels a little light more like two thirds of a gram to three quarters of a gram. So you weigh it and demand the rest, and they give you more. Or if you're buying 5 dollars of cheddar cheese and it feels more like 3 or
4 dollars of cheddar cheese so you ask for more. When you're in
college studying organic chemistry, mathematics, history, geology, and you forgot a
book because the bookbag feels a little light. When you make
money selling coffee and the stack of
money they pay you feels a little light today. When you ask a
friend for half the energy drink and they only give you a third and you say this feels a little light, so they pour more. It means it's not enough or something is missing.
Tony: You got the 40 of those 100mg Flodafinil pills.
Steve: Sure.
Tony: *Hands money.
Steve: *Hands Flodafinil pills.
Tony: This feels a little light! Are you jacking me?!
Steve: Hands over the 3 he was taking from Tony that he planned to do later.