Type :PillowNo: in any channel on osu! Game to post it.
Using it on other servers or in DMs needs Discord Nitro.
To add it to a server you manage, download the PNG, then open Server Settings → Emoji → Upload Emoji. Discord takes PNG, JPG and GIF files up to 256 KB.
Also known as
RWNo, no, GO_pillowNo, NA_No, AK_no, YA_No, ANIsno, 7_nonono