src/main/java/com/github/ricksbrown/cowsay/CowFace.java
public final void setTongue(final String tongue) {
		if (tongue != null && tongue.length() > 0) {
			if (tongue.length() > 2) {
				this.tongue = tongue.substring(0, 2);
			} else {
				this.tongue = tongue;
			}
		}
	}
public final void setTongue(final String tongue) {
		if (tongue != null && tongue.length() > 0) {
			if (tongue.length() > 2) {
				this.tongue = tongue.substring(0, 2);
			} else {
				this.tongue = tongue;
			}
		}
	}
Set custom cow tongue.
@param tongue The tongue to use - if more than two characters long the first two will be used.