So, Mistletoe, In Fact, Symbolizes Mistletoe.

The Elevator Shaft Was A Kind Of Heat Sink. Hot Food Was Cold By The Time It Arrived. Cold Food Got Colder. No One Knew What Would Happen To Ice Cream, But It Would Probably Involve Some Rewriting Of The Laws Of Thermodynamics.

Nanny Ogg Knew How To Start Spelling 'banana', But Didn't Know How You Stopped.

Don't Stick Your Nose Where Someone Can Pull It Off And Eat It.

It Was Carrot Who'd Suggested To The Patrician That Hardened Criminals Should Be Given The Chance To 'serve The Community' By Redecorating The Homes Of The Elderly, Lending A New Terror To Old Age And, Given Ankh-morpork's Crime Rate, Leading To At Least One Old Lady Having Her Front Room Wallpapered So Many Times In Six Months That Now She Could Only Get In Sideways.

It's An Old Magical Principle - It's Even Filtered Down Into Rpg Systems - That Magic, While Taking A Lot Of Effort, Can Be 'stored' - In A Staff, For Example. No Doubt A Wizard Spends A Little Time Each Day Charging Up His Staff, Although You Go Blind If You Do It Too Much, Of Course.