Keress bármilyen szót, mint például: blumpkin
Acronym: Thread With Extraordinary Survival Instinct Syndrome.

Typically applies to threads in bulletin-boards/forums that are active over an unusually long period of time.
Example: This Happy Birthday thread is just another to be affected by TWESIS! Few birthday threads last this long!
Beküldő: Sid! 2005. november 15.