To rock on.=To continue doing what you have been doing.
When I turn 65, I'm going to rock on till I'm 100.
Ace./To ace.=The best./To win or score high on a test.
Tanaka is the ace pitcher for the Eagles. You can't be ace, if you are lost in space. / I aced my test.
Elbow grease. = Muscle. (Slang) It means to use physical effort.
If you want to clean the bathtub, you have to use some elbow grease.
Tiresome. = Fatiguing.
Standing on the train for a long period of time is tiresome.
Genuinely.= Sincerely, honestly.
I am genuinely happy over my daughter's success.
Keep on keeping on.= To continue to do your best, don't give up.
For the year 2014, please keep on keeping on and everything will work out.
Selfie. = A picture taken by yourself.
You can see people taking selfies in every tourist spot.
Pull the trigger.= To begin something.
I wanted to buy a new car but since it was expensive it took me a while to pull the trigger.
To hang in there.= To never, never, never give up.
When things get tough, hang in there and everything will work out.
Sales pitch.= Sales presentation.
A good salesman usually has a sweet sales pitch.