Strange words to use in the context

Via @MisanthropeGirl, from North West Georgia News:

A Floyd County farmer was killed Wednesday morning when a cow he was trying to move knocked him up against a fence, resulting in massive chest trauma. Floyd County Coroner Gene Proctor said Nathan William Parris, 72, of 2056 Cunningham Road was pronounced dead at 11:04 a.m. after reaching the Redmond Regional Medical Center emergency room.

Doesn't "knocked him up" suggest "got him "pregnant"?