Did you ever have someone take credit for something good you did? How did you feel about it? How is this like plagiarism?

Did you ever have someone take credit for something good you did? How did you feel about it? How is this like plagiarism?

Yeah, when I use to do group work, I use to the most work and the other people use to sit their and take the credit. But I didn't care because we all got the same grade for the project, so it didn't really matter to me.