In an early close-up in the photography studio, you can really see the damage Lloyd suffered to his face in the prop bomb explosion that occurred at the Witzel Studio on 14 August 1919. His face would eventually heal, but he lost the thumb and forefinger of right hand and he adopted the use of a prosthetic rubber glove (which looked unnaturally stiff) for the remainder of his film career.
The title, "Get Out and Get Under," comes from a popular 1913 song, "He'd Have To Get Under - Get Out And Get Under (To Fix Up His Automobile)" (Music by Maurice Abrahams; Lyrics by Grant Clarke and Edgar Leslie). Robert Israel's score in the 2004 alternate version frequently uses melodies from this song.