Internet Language

AHA	Expression of discovery or realization
AIYA	Cantonese expression of exasperation
ALAS	Expression of regret, sorrow
ARGH	Expression of frustration or anger
BIG UP	Expression of respect
BLAR	Expression of boredom, BLAH
BLARG	Expression of boredom
BLEH	Expression of boredom
BLIMEY	Expression of surprise, OMG
BUH	Expression of dismay, disgust
DOH	Expression of frustration, realization
EEE	Expression of excitement
EEK	Expression of surprise, distress
ENNIT	Expression of agreement
EWW	Expression of disgust
FEH	Expression of dismissal, disgust
GAH	Expression of frustration
HMPH	Expression of apathy or disagreement
HUZZAH	Expression of triumph, joy
JEEZ	Expression of annoyance Jesus
MER	Expression of boredom, nonchalance
MMM	Expression of pleasure or contentment
MY FOOT	Expression of disbelief
NKT	Expression of annoyance
PFF	Expression of disagreement
PFFT	Expression of dismissal
PHEW	Expression of relief
PHOAR	Expression of lust, physical attraction
POKER FACE	Expressionless face
PSH	Dismissive expression
PSHAW	Expression of disbelief, scepticism
SHIOK	Expression of happiness, pleasure
SHUCKS	Expression of modesty or disappointment
SHUX	Shucks, expression of modesty
SNAP	Expression of dismay, surprise, joy etc
UH	Expression of hesitation
UM	Expression of hesitation
URGH	Expression of annoyance, displeasure
WERD	Expression of agreement
WERK	Expression of approval, praise
WHEW	Expression of relief or amazement
WHOA	Expression of surprise Slow down
WOO HOO	Expression of excitement
YIKES	Expression of shock or surprise
YUCK	Expression of disgust
Other terms relating to 'disappointment':
SHUCKS	Expression of modesty or disappointment
Other terms relating to 'disgust':
:|	Disgust, disapproval, not funny
ACK	Disgust, frustration Acknowledgement
BUH	Expression of dismay, disgust
EW	Exclamation of disgust
EWW	Expression of disgust
FEH	Expression of dismissal, disgust
GRODY	Disgusting, nasty, gross
GROSS	Unpleasant, disgusting
MINGING	Dirty, disgusting, ugly
RANK	Disgusting, gross
YUCK	Expression of disgust
YUCKY	Disgusting, gross

lol. My foot! hahah
from http://www.internetslang.com/UGH-meaning-definition.asp