Nintendo slider n. in baseball, a pitch which breaks unexpectedly over the plate, as if remotely controlled. (source: Double-Tongued Dictionary)
Bugs Bunny changeup n. in baseball, a slow pitch disguised as a fast ball which seems to stop in front of the plate. (source: Double-Tongued Dictionary)
Bugs Bunny changeup n.— «The newest entry into the baseball vernacular is “Bugs Bunny changeup.” Translation: It rushes up to the plate and then suddenly stops. Sarver fed the Gamecocks carrots and lettuce all night...