burp
v.— «The firefighters have a technique called “burping the suit” that involves pulling open the neck of the Mustang, then crouching down to force excess air out of the suit. The technique prevents the suit from ballooning once they jump in the water.» —“Hillcrest rescue team dives right in” by Jason Lea News-Herald (Willoughby, Ohio) Feb. 8, 2007. (source: Double-Tongued Dictionary)