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“I’ve become a little bit of a thumber. You know, throwing a lot of off speed. And surprisingly, there are times where my heater plays up,” Morton said.

Along came the forehand, the hammer, the scoober, and more exotic passes with names like the thumber, overhand, duck and blade — all deployed, as in football, with the aim of helping a team reach the end zone.

Along came the forehand, the hammer, the scoober, and more exotic passes with names like the thumber, overhand, duck and blade - all deployed, as in football, with the aim of helping a team reach the end zone.

But the single most frequent behavior — displayed by two-fifths of the riders the magazine observed — is a thoroughly recent invention: The Awkward Cellphone Thumber.

Why? or learn the Thumber rule.