## Etymology and usage of 凸待ち

10

I've seen the internet slang 凸{とつ}待{ま}ち used for "waiting for incoming (Skype etc) calls" pretty frequently, but what is the etymology and usage of the word?

I've read on other sites that it came from the following:

But why did "attack" come to mean "incoming calls"? And why did 凸{とつ} ("convex") come to be used instead of 突{とつ}?

Also, can it be used in a more generic sense, i.e. "waiting for an [assault/attack]"?

– Dono – 2012-09-10T04:47:06.377

@Dono I saw that, but I wasn't sure why 凸 was used here instead of 突. I was wondering whether it's just that it's easier to input or something or whether there's something behind this 凸, and also why 突撃 came to mean "incoming call". – cypher – 2012-09-10T04:54:48.437

3When I type とつ, the first conversion I get is 凸. I'm guessing it's similar for most IMEs. – Zhen Lin – 2012-09-10T06:00:19.343

@ZhenLin, many IMEs reorder choices according to what you use the most. – dainichi – 2012-09-10T10:07:18.790

I'm aware of that. But I don't type Japanese much – so for many inputs I will get the default lists. – Zhen Lin – 2012-09-10T10:16:57.667

1

I think that word 電凸 existed before word 凸待ち, and 電凸 is more like an attack.

– Tsuyoshi Ito – 2012-09-10T11:40:33.393