diff --git a/poezio/core/commands.py b/poezio/core/commands.py
index 5c8199c0..f301e801 100644
--- a/poezio/core/commands.py
+++ b/poezio/core/commands.py
@@ -763,6 +763,20 @@ class CommandCore:
         self.core.invite(to.full, room, reason=reason)
         self.core.information('Invited %s to %s' % (to.bare, room), 'Info')
 
+    @command_args_parser.quoted(1, 0)
+    def impromptu(self, args):
+        """/impromptu <jid> [<jid> ...]"""
+
+        if args is None:
+            return self.help('impromptu')
+
+        jids = []
+        for jid in common.shell_split(' '.join(args)):
+            jids.append(safeJID(jid).bare)
+
+        self.core.impromptu(jids)
+        self.core.information('Invited %s to a random room' % (' '.join(jids)), 'Info')
+
     @command_args_parser.quoted(1, 1, [''])
     def decline(self, args):
         """/decline <room@server.tld> [reason]"""
diff --git a/poezio/core/completions.py b/poezio/core/completions.py
index b283950e..87bb2d47 100644
--- a/poezio/core/completions.py
+++ b/poezio/core/completions.py
@@ -289,6 +289,19 @@ class CompletionCore:
             return Completion(
                 the_input.new_completion, rooms, n, '', quotify=True)
 
+    def impromptu(self, the_input):
+        """Completion for /impromptu"""
+        n = the_input.get_argument_position(quoted=True)
+        onlines = []
+        offlines = []
+        for barejid in roster.jids():
+            if len(roster[barejid]):
+                onlines.append(barejid)
+            else:
+                offlines.append(barejid)
+        comp = sorted(onlines) + sorted(offlines)
+        return Completion(the_input.new_completion, comp, n, quotify=True)
+
     def activity(self, the_input):
         """Completion for /activity"""
         n = the_input.get_argument_position(quoted=True)
diff --git a/poezio/core/core.py b/poezio/core/core.py
index eec0d49b..985dcbab 100644
--- a/poezio/core/core.py
+++ b/poezio/core/core.py
@@ -13,6 +13,7 @@ import pipes
 import sys
 import shutil
 import time
+import uuid
 from collections import defaultdict
 from typing import Callable, Dict, List, Optional, Tuple, Type
 
@@ -868,6 +869,28 @@ class Core:
         self.xmpp.plugin['xep_0030'].get_info(
             jid=jid, timeout=5, callback=callback)
 
+    def impromptu(self, jids: List[JID]) -> None:
+        """
+        Generates a new "Impromptu" room with a random localpart on the muc
+        component of the user who initiated the request. One the room is
+        created and the first user has joined, send invites for specified
+        contacts to join in.
+        """
+
+        # Use config.default_muc as muc component if available, otherwise
+        # find muc component by disco#items-ing the user domain. If not, give
+        # up
+        default_muc = 'chat.cluxia.eu'
+
+        nick = self.own_nick
+        room = uuid.uuid4().hex + '@' + default_muc
+
+        self.open_new_room(room, nick).join()
+        self.information('Room %s created' % room, 'Info')
+
+        for jid in jids:
+            self.invite(jid, room)
+
     def get_error_message(self, stanza, deprecated: bool = False):
         """
         Takes a stanza of the form <message type='error'><error/></message>
@@ -1788,6 +1811,13 @@ class Core:
             desc='Invite jid in room with reason.',
             shortdesc='Invite someone in a room.',
             completion=self.completion.invite)
+        self.register_command(
+            'impromptu',
+            self.command.impromptu,
+            usage='<jid> [<jid> ...]',
+            desc='Invite people into an impromptu room',
+            shortdesc='Invite someone in a room.',
+            completion=self.completion.impromptu)
         self.register_command(
             'invitations',
             self.command.invitations,