MRE bomb
n.— «The children of western Iraqi border towns have a new toy since the Marines rolled through earlier this month—the MRE bomb. Local children here like to take the chemical heaters found in the Marines’ Meals Ready to Eat and seal them off in water bottles until pressure builds up.» —“Cosmo ranks Marine in Iraq among 50 sexiest bachelors” by Andrew Tilghman Stars & Stripes Nov. 24, 2005. (source: Double-Tongued Dictionary)