I don't remember this every happening with brooklyn. perhaps you have a lilting gait?
The gushers I have had have had obvious causes. I remember buying a 750cl bottle of something belgian in Sweeneys in glasnevin, and standing in agony as the guy behind the counter gushed (boom boom) about what a lovely beer it was (which I already knew), all the while swinging it nonchalantly around like a baseball bat while waiting for my card to go through. I didn't have the heart to ask him to stop swinging my beer about, he just wanted to talk beer. Needless to say even leaving it an hour didn't do much, I had to employ sean's method (I almost called it the billings method ha) with a swift glass at the ready.