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Because He Was High? Justin Bieber Giggly, Glassy-Eyed In New Instagram Video

Justin Bieber‘s behavior is raising eyebrows yet again.

“So, crazy news guys! There is video on Instagram,” the 19-year-old Baby singer, clad in a black baseball cap and showing off his tattoos, says in the clip.

The speed-racing pop star, in the 15-second video, is quite giggly and glassy-eyed, prompting some Tweeters to speculate he might have indulged in marijuana prior to filming.

PHOTOS: Bieber Fever!

Watch the video on RadarOnline.com

After Bieber commented on the Miami Heat’s NBA win over the San Antonio Spurs, one user wrote, @justinbieber admit that you were stoned while you watched it because everyone knows you were high enough to dunk,” while another went to the trouble of photoshopping the Biebs (as a stone) to make his point clear.

What do you think?