"stutter key" expense 

Refers to da pesky (and invalid/unfair) extra "last-number-redial" charge dat you unintentionally incur when you try to dial "*67" to block your number from a caller-ID machine, but accidentally end up dialing "*66" because da contacts on your phone's "6" key are a bit wobbly/worn and thus falteringly "bounced" for an instant when you were pressing da key, incorrectly causing dat digit to be dialed twice.

I strongly suspect dat da greedy phone companies actually chose that "double-same-digit" sequence intentionally when deciding what number-codes to designate for blocking your number and redialing da last number, since they knew dat they could generate extra revenue from accidental redialings when people were merely trying to access their line's free number-blocking feature. Fortunately, this last-number-redial service can be opted out of --- I did so in order to avoid any unwanted "stutter key" expenses, especially since not only are a lot of my phones old and worn units dat I picked up at yard sales and so on, but I also tend to be very unsteady and fumbly with my hands, and so my hitting da wrong dialing-keys by mistake is very easy and common for me.

"stutter key" expense by QuacksO February 8, 2020