Flint knapping is when two guys put pieces of flint rock between their buttcheeks and moon land each other. The friction generates a spark which tickles their anus hole and gives the Flint knappers extreme pleasure.
verb: a technique commonly used by college students involving the taking of bagels from the dorm cafeteria with the sole purpose of saving as snacks for later. The most common form of bagel-knapping involves stuffing as many bagels as possible into your sweatshirt.
"Shit, dude, I'm so hungry, but we're out of snacks."
"Well, get your sweatshirt on. Let's go bagel-knapping."
This is also a place in the world. If this is your last name it means you are one true member of society. You love to talk and engage with other people who you might not even know. You are also one of the lucky people who will always find true love. If a Knappskog ever finds someone, they will love themuntil the day they die.