How to use the Endlesscycleofpainandsuffering sticker
Open the sticker picker in any channel on Tuition Train and pick endlesscycleofpainandsuffering.
Sending it on other servers or in DMs needs Discord Nitro.
To add it to a server you manage, download it, then open Server Settings → Stickers → Upload Sticker. Discord takes PNG, APNG and GIF files up to 512 KB.