They're not happy if you are ...
a fun crusher
Always worries about matters and details that are not important.
A bit of an old lady
He knows everything about everything. All the time.
A clever dick
He seems to enjoy preventing people from having fun.
A wet blanket
Quite the ladies' man...
a Don Juan
Gets on well with everyone and is not afraid to mingle.
A good mixer
They like to take their time ... always.
a slow coach
Mind your own business!
a Nosey Parker
Life is full of surprises with them...
a loose cannon
Fun guaranteed in his company!
The life and soul of the party.