FIG. 1 is a perspective view of a blow-off mouth of an automobile;
FIG. 2 is a front view;
FIG. 3 is a top plan view;
FIG. 4 is a bottom plan view; and
FIG. 5 is a right side elevational view;
FIG. 6 is a left side elevational view; and,
FIG. 7 is a cross-sectional view taken along 14—14 as shown in FIG. 8.