diff --git a/core/init.go b/core/init.go
index b774ec9..05f1e59 100644
--- a/core/init.go
+++ b/core/init.go
@@ -1,6 +1,11 @@
 package core
 
-import "os"
+import (
+	"os"
+	"time"
+)
+
+var Duration = time.Duration(sillyGirl.GetInt("duration", 5)) * time.Second
 
 func init() {
 	killp()
diff --git a/im/im.go b/im/im.go
index 881a049..b26a06d 100644
--- a/im/im.go
+++ b/im/im.go
@@ -1,6 +1,8 @@
 package im
 
-import "time"
+import (
+	"time"
+)
 
 type Sender interface {
 	GetUserID() int
diff --git a/im/tg/tg.go b/im/tg/tg.go
index 331423e..017da7b 100644
--- a/im/tg/tg.go
+++ b/im/tg/tg.go
@@ -158,8 +158,11 @@ func (sender *Sender) Reply(msgs ...interface{}) error {
 	if err != nil {
 		sender.Reply(err)
 	}
-	if rt != nil {
-
+	if rt != nil && sender.Duration != nil {
+		go func() {
+			time.Sleep(*sender.Duration)
+			b.Delete(rt)
+		}()
 	}
 	return err
 }
@@ -171,5 +174,9 @@ func (sender *Sender) Delete() error {
 }
 
 func (sender *Sender) Disappear(lifetime ...time.Duration) {
-
+	if len(lifetime) == 0 {
+		sender.Duration = &core.Duration
+	} else {
+		sender.Duration = &lifetime[0]
+	}
 }