TISM meaning in Community ?

Answer: What is This Is Serious Mum mean?

TISM (an acronym of This Is Serious Mum) were a seven-piece anonymous alternative rock band from Melbourne, Australia. The group was formed on 30 December 1982 by vocalist/drummer Humphrey B. Flaubert, bassist/vocalist Jock Cheese and keyboardist/vocalist Eugene de la Hot Croix Bun, and enjoyed a large underground/independent following. Their third album, Machiavelli and the Four Seasons, reached the Australian national top 10 in 1995.

reference

Full Form	Category
T I S Mortgage Investment Company	Business
Traumatic Incident Stress Management	Business
TRIPLE I Security Management	Business
Tool for Information System Management	Business
This Is Serious Mum	Community
This Is Speed Metal	General
Total Interpretive Structural Modelling	General
Total Interpretive Structural Modeling	General
Test Instrumentation Support Module	General
The Incredible Shrinking Man	General
TACLANE Internet Security Manager	Internet
Targeted Immutable Short Message	Military and Defence
The Irish Separatist Movementpic	Regional
Tulane Institute of Sports Medicine	Sports
Telecommunication Information Studies and Media	Telecommunication