111.   The writing exercise, teachers have told the authors, may also have helped head off a number of potential teen suicides.

112.   Then, for no apparent reason, the chimps start screaming their little hairy heads off.

113.   Then he got up on the bleacher bench and yelled his head off.

114.   Therefore, sustained good news will be met with credit tightening to slow growth and thereby head off inflation.

115.   To stabilize the currency and head off inflation, the central bank has tightened credit, driving up borrowing costs.

116.   To help direct popular anger and head off competition from radical Islamic groups, it has set itself up as the main address for acceptable anti-Israeli sentiment.

117.   U.S. lawmakers propose doubling the bonus for experienced pilots who stay in the military in an effort to head off a potential pilot shortage.

118.   Use the flex in your legs to raise and lower your head off the ceiling.

119.   We can holler our heads off.

120.   When I feel my pocket being picked I will shout my head off.