diff --git a/src/bots/leek.rs b/src/bots/leek.rs
index 95ee0a7..de50d92 100644
--- a/src/bots/leek.rs
+++ b/src/bots/leek.rs
@@ -1 +1,50 @@
 // TODO: port leek @karx
+
+macro_rules! hashmap {
+    ($( $key: expr => $val: expr ),*) => {{
+        let mut map = ::std::collections::HashMap::new();
+        $( map.insert($key, $val); )*
+        map
+    }}
+}
+
+// macro_rules! mock {
+//     ($target:expr) => {{
+//         let mut builder = String::from("");
+
+//         for char in $target.chars() {
+//             if rand::random() {
+//                 builder.push_str(&char.to_uppercase().to_string());
+//             } else {
+//                 builder.push_str(&char.to_lowercase().to_string());
+//             }
+//         }
+
+//         builder
+//     }}
+// }
+
+pub fn leetify(target: &str) -> String {
+    let letters = hashmap! {
+        'a' => '4',
+        'e' => '3',
+        'i' => '1',
+        'o' => '0',
+        'g' => '6',
+        's' => '5',
+        't' => '7',
+        'b' => '8'
+    };
+
+    let mut builder = String::with_capacity(target.len());
+
+    for char in target.chars() {
+        if let Some(repl) = letters.get(&char.to_ascii_lowercase()) {
+            builder.push(*repl);
+        } else {
+            builder.push(char);
+        }
+    }
+
+    builder
+}
\ No newline at end of file
diff --git a/src/bots/mod.rs b/src/bots/mod.rs
index a499766..29f6a4f 100644
--- a/src/bots/mod.rs
+++ b/src/bots/mod.rs
@@ -1,2 +1,3 @@
 pub mod title;
 pub mod weeb;
+pub mod leek;
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 5380dd7..44ad630 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -165,6 +165,22 @@ async fn handle_privmsg(
                 .unwrap_or("Invalid category. Valid categories: https://waifu.pics/docs");
             state.client.privmsg(&channel, response).await?;
         }
+        "leet" => {
+            let user = match remainder {
+                Some(u) => match u {
+                    "" => &nick,
+                    _ => u
+                },
+                None => &nick
+            }.trim();
+            tracing::info!(user);
+            if let Some(prev_msg) = state.last_msgs.get(user) {
+                let resp = bots::leek::leetify(prev_msg);
+                state.client.privmsg(&channel, &resp).await?;
+            } else {
+                state.client.privmsg(&channel, "No previous messages to leetify!").await?;
+            }
+        }
         _ => {
             state.client.privmsg(&channel, "Unknown command").await?;
         }