That's certainly not a girl.. All boy for sure
I'm not sure how you're looking at the image, but the testicles are not shown. The arrow is pointing to the base of the penis. But I agree with all of the above; that's definitely a boy. Congratulations =)
Looks like a boy to me as well. I had the tech confirm my lil booger was still a boy at my 20 week ultrasound.... She even gave me the picture and it looks very similar to yours. Yay Team Blue!
u can click on image to enlarge it
It looks like a boy to me.