My team leader (Indian) asked me, in my second month in the job, to estimate the required time for testing some screens.
I made the estimations based on my experience and understanding of "screen testing" then discussed it with him and he accepted the estimations.
When the time came to start the task, he sent me a document about writing automation test for the screens,which was new thing to me.
The task took more than the estimations (3 times) and I have been blamed because I made wrong estimations.
The team leader was the one who blamed me!!!
Never estimate a task without full description...