Switches the pref to be a boolean, switches the checks to be booleans, adds stomptext to even display the thing, and also hopefully saves the pref.

modular_splurt/code/modules/client/preferences.dm

@@ -6,7 +6,8 @@
 /datum/preferences
 	max_save_slots = DEFAULT_SAVE_SLOTS
 	var/unholypref = "No" //Goin 2 hell fo dis one
-	var/stomppref = "No" // Please step on me.
+	var/stomppref = FALSE // Please step on me.
+	var/stomptext = "No" // For displaying the pref.
 	var/list/gfluid_blacklist = list() //Stuff you don't want people to cum into you
 	var/new_character_creator = TRUE // old/new character creator
 	var/show_in_directory = 1	//Show in Character Directory

modular_splurt/code/modules/client/preferences_savefile.dm

@@ -10,6 +10,8 @@
 	directory_tag			= sanitize_inlist(directory_tag, GLOB.char_directory_tags, initial(directory_tag))
 	directory_erptag		= sanitize_inlist(directory_erptag, GLOB.char_directory_erptags, initial(directory_erptag))
 	directory_ad			= strip_html_simple(directory_ad, MAX_FLAVOR_LEN)
+	// Get stomping preferences.
+	stomppref = S["stomp_pref"]
 
 /datum/preferences/proc/splurt_character_pref_save(savefile/S) //TODO: modularize our other savefile edits... maybe?
 	//Character directory
@@ -18,6 +20,9 @@
 	WRITE_FILE(S["directory_erptag"], directory_erptag)
 	WRITE_FILE(S["directory_ad"], directory_ad)
 
+	// Stomping preferences.
+	WRITE_FILE(S["stomp_pref"], stomppref)
+
 /datum/preferences/update_preferences(current_version, savefile/S)
 	. = ..()
 	if(current_version < 57.01) //a