Words with no vowels

Remember when you were learning to spell and they told you that words were always made up of a combination of consonants and vowels (and sometimes Y)? Well, they lied. This word list contains a handful of valid Scrabble words that have no vowels at all.

BRR
BRRR
CRWTH
CRWTHS
CWM
CWMS
HM
HMM
MM
NTH
PFFT
PHPHT
PHT
PSST
SH
SHH
TSK
TSKS
TSKTSK
TSKTSKS