Listen.....
First of all you do job only for surviving beautiful life.
You are really dicouraging yourself by asking such silly 
questions.
Don't mind for the above comments made.

Before i answer your question--
Can you think for one of my question-
your question is similar to this only.
How do u feel as human being?
If you can answer this.You can automatically answer your 
own question.Just the difference is TestEngineer.


FYI-By now from the infromation on various testing related 
sites you might have known what are the responsibilities of 
TestEngineer.

Just tell them what you do if you were a TestEngineer which 
is nothing but expressing yourself has TestEngineer.
Tell that My role in recent assignment is TestEngineer.
Under responsibilities mention as:
I analysed the TestPlan,Designed testscenarios,prepared 
testcases,performed execution,monitored defects and 
prepared observation reports.

Then based on what you tell that opposite person will ask 
what testing you did.Then Tell him I did 
Functional/performance/regression/system or in which ever 
area you are well skilled.


Look the opposite person asks the questions from the 
answers you give.If not he will ask according to the 
position being offered,if not that ,he will ask based on 
you CV about your projects/role/responsibilities.