diff --git a/plugins/plugins.go b/plugins/plugins.go
index f1f0b13..4c98770 100644
--- a/plugins/plugins.go
+++ b/plugins/plugins.go
@@ -62,5 +62,6 @@ var Plugs = Plugins{
 	&OpenBSDMan{},
 	&Source{},
 	&Version{},
+	&Wb{},
 	&Weather{},
 }
diff --git a/plugins/welcome_back.go b/plugins/welcome_back.go
new file mode 100644
index 0000000..deef635
--- /dev/null
+++ b/plugins/welcome_back.go
@@ -0,0 +1,38 @@
+package plugins
+
+import (
+	"fmt"
+	"log"
+	"regexp"
+
+	"github.com/matrix-org/gomatrix"
+)
+
+// Wb responds to welcome back messages
+type Wb struct {
+}
+
+func (h *Wb) match(msg string) bool {
+	re := regexp.MustCompile(`(?i)^welcome back|welcome back$|^wb|wb$`)
+	return re.MatchString(msg)
+}
+
+// SetStore we don't need a store here
+func (h *Wb) SetStore(s PluginStore) { return }
+
+// RespondText to welcome back events
+func (h *Wb) RespondText(c *gomatrix.Client, ev *gomatrix.Event, user, post string) {
+	u := NameRE.ReplaceAllString(user, "$1")
+	s := NameRE.ReplaceAllString(ev.Sender, "$1")
+	if ToMe(u, post) {
+		if h.match(post) {
+			log.Printf("%s: responding to '%s'", h.Name(), ev.Sender)
+			SendText(c, ev.RoomID, fmt.Sprintf("thanks %s!", s))
+		}
+	}
+}
+
+// Name Wb
+func (h *Wb) Name() string {
+	return "Wb"
+}