Canadian heartthrob Justin Bieber kicked off his Purpose world tour this week and he sat down for a quick-fire interview with Glamour magazine ahead of the jaunt. 

When asked what he would consider to be his biggest fear, the 'Love Yourself' sensation admitted that he can't bear "small spaces". He then opened up about the living person he admires the most and confessed that his grandparents fit that bill: "My grandparents. They are amazing and have always been there for me."

The superstar then talked about the craziest thing he's faced on social media and refused to give specifics, but teased: "My fans can have dirty minds."

Bieber, meanwhile, was recently named VEVO's most viewed artist for the month of February. He accumulated a staggering 34,574,943 views across his videos on the platform, which include the 14 clips as part of his PURPOSE: The Movement series.

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Watch Bieber in action here: