25 of the strangest things people have done in a job interview

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Every job seeker wants to stand out from the competition, but some candidates go about it all wrong.

For instance, according to recent surveys from CareerBuilder, one interviewee sang her responses to questions, while another did a phone interview in the bathroom — and flushed.

"It's hard to say why a candidate would do some of these things," Rosemary Haefner, chief human-resources officer for CareerBuilder, tells Business Insider. "Maybe he or she is nervous, thinks an employer would find it funny, or perhaps the candidate simply has no boundaries."

"Regardless," Haefner says, "it could cost the candidate the job, so funny or not, it's likely not worth risking it with these actions. Your nerves can make you freeze up under the spotlight, and that's normal. How you handle that is what matters."

More than 2,600 hiring managers and employers shared with CareerBuilder the most memorable job-interview mistakes candidates have made. Here are 25 of the most unusual things that happened:

Wrong answers

• When asked what the candidate's ideal job was, they said "painter of birdhouses," even though they were interviewing for a data-entry clerk position.

• A candidate said her hair was perfect when asked why she should become part of the team.

• When asked why he wanted the position, a candidate replied, "My wife wants me to get a job."

• A candidate said he wouldn't be willing to wear slacks because they don't feel good.

• A candidate stated that if the interviewer wanted to get to heaven, she would hire him.

Childish behavior

• A candidate asked to step away to call his wife to ask her if the starting salary was enough before he agreed to continue with the interview.

• A candidate brought his childhood toys to the interview.

Rude behavior

• A candidate started screaming that the interview was taking too long.

• A candidate ate a pizza he brought with him (and didn't offer to share).