diff --git a/.gitconfig b/.gitconfig
index 98d5750..6111e49 100644
--- a/.gitconfig
+++ b/.gitconfig
@@ -97,6 +97,7 @@
 
   broom = "!. ~/.githelpers && delete_remoteless_branches_interactive"
   spring-cleaning = "!. ~/.githelpers && delete_all_my_branches_interactive"
+  everybody-out = "!. ~/.githelpers && delete_all_others_local_branches"
 
   nuke = "!git reset --hard HEAD && git clean -fd"
 
diff --git a/.githelpers b/.githelpers
index 7a64e53..18225b6 100644
--- a/.githelpers
+++ b/.githelpers
@@ -116,6 +116,15 @@ delete_all_my_branches_interactive(){
   done
 }
 
+# Delete all non-personally-prefixed non-primary branches.
+delete_all_others_local_branches(){
+  for branch in $(git branch | grep '/' | grep -v 'aln\|anorton\/'); do
+    printf "Delete $branch? ";
+    read ans;
+    [[ "$ans" == "y" ]] && git branch -D $branch
+  done
+}
+
 # Accepts a sed substituion (e.g., s/foo/bar/) and applies it to the current branch, also unsetting the upstream branch.
 rename_branch_regex(){
   if [ -z "$1" ]; then