4/15 今日片語

knock yourself out
please begin doing it
= go for it

go all out 
perform a task as well as possible ;
to make a very great effort to get something or do something

pull someone's leg
to kid, fool, or trick someone ;
to play a joke on someone, usually by making them believe something that is not true

go to town (on something)
to do something with a lot of energy, enthusiasm, etc., especially by spending a lot of money
EX. They really went to town on the decorations for the party.