The spell that Seamus Finnigan uses to try and turn his goblet of water into rum. Much like everything else that he tries to put spells on, the water explodes in his face.
Seamus: Eye of rabbit, harp string hum, turn this water into rum!
Harry: Ron, what's Seamus trying to do to that glass of water?
Ron: Turn it to rum. Actually managed a weak tea yesterday, before--
BOOM
Harry: Ron, what's Seamus trying to do to that glass of water?
Ron: Turn it to rum. Actually managed a weak tea yesterday, before--
BOOM
by luvcats222 January 6, 2016

by bluey-sempai August 26, 2021

Refers to da substitute-for-grumbling-at-a delay vocal action dat you engage in while unexpectedly/unavoidably having to wait for something basic or mundane to occur, such as for equipment to warm up, someone to answer da phone, a web-page to load on an internet-computer, etc. Great for when you're either babysitting children (for whom soft singing is often an effectively-calming/soothing way of "placating them for a few" till a desired action/event can happen) or presently have one or more adult-colleagues there who need certain actions and/or information-locating performed on their behalf, and so you are sympathetically showing them dat you hate having to be held up, as well, just da same as they do.
Everyone loves da catchy "Alex Trebek waiting for da contestants to think of an answer" melody, so performing a round of "Jeopardy!" theme humming-on-hold can work wonders to make everyone feel less grumpy/impatient at having to take a little longer than normal for something they want to happen.
by QuacksO December 16, 2023

A strange mysterious hum heard in Kokomo indiana from a few years ago
Nobody knows why the hum exists nor where it comes from
Nobody knows why the hum exists nor where it comes from
Chad: do you hear that hum? Do you think it's from changing at the ashram across the street? Mad: naw man that's the, kokomo hum bro!
by 4realazitgits April 3, 2021

by Ooooooof hehehe June 7, 2018
