It’s been 20 years since we last saw Harry and Lloyd, but cinema’s two most loveable idiots are back this November for their long awaited sequel, Dumb and Dumber To. We’ve just had our first look at the trailer which gives us a good idea of what to expect from the boys two decades on. We wouldn't have ever thought Harry and Lloyd could teach us much, but here’s 10 things we learnt from the The Dumb and Dumber To trailer.

Dumb and Dumber toHarry and Lloyd are back and even dumber

1. It’s been 20 years…

Amazingly, two decades have past since the first Dumb and Dumber movie and the sequel carries on in real time with our two heroes now twenty years older.

2. So what’s Lloyd been up to?

Since the last movie, Lloyd has spent his days (looking oddly like Forest Gump at the end of his run) in an asylum where his best friend comes to visit him everyday. But as it turns out, there’s nothing really wrong with Lloyd, he’s been faking it the whole time as part of an elaborate practical joke.

More: Dumb and Dumber To: Everything You Need To Know

3. There’s going to be plenty of slapstick humour

Twenty years on and Dumb and Dumber’s gags haven’t progressed too much (not that we’re complaining.) Less than a minute into the trailer we’re treated to the sight of Harry removing Lloyd’s catheter, no nurse required. Ouch!

4. Harry has a cat

Since Lloyd’s been away, Harry’s got himself a new friend, a cat named ‘Butthole’. Why would someone name their cat butthole? Well ask a dumb question and you get an even dumber answer.

Watch the Dumb and Dumber To trailer here

5. Harry has daughter!

As much as we didn't trust Harry to look after a cat, the next big revelation is he’s also a father! Turns out Harry became a father in 1991 but he never saw the postcard telling him the good news. Sounds like it’s time to find Harry’s 23 year old daughter.

6. Harry’s babymama is…Kathleen Turner

Yes, the voice of Jessica Rabbit, Chandler Bing’s dad and Oscar nominee Kathleen Turner plays Lloyd’s ex Fraida Felcher. But it turns out Fraida gave her and Harry's daughter up for adoption, looks like it’s down to our two idiots to find her.

More: Jim Carrey Offers Words Of Wisdom With Inspirational Graduation Speech

7. Harry’s daughter is hot!

Who’d have thought it, Harry Dunne managed to produce a seriously good looking daughter. Actually based on Lloyd’s reaction to her picture, she may be a little too good looking.

8. The Mutt Cutts van is back!

Yes the Mutt Cutts van is another star from the original movie who’s back for more, how else would Harry and Lloyd have a road trip?

Jim Carrey and Jeff Daniels in Dumb and Dumber ToHarry and Lloyd will ride the Mutt Cutts van!

9. There’s an awesome vending machine moment

We don't know the context of the gag but we do know we just seen the greatest example of blending into a vending machine in cinematic history.

10. Harry and Lloyd have not grown up much

It might be 20 years on, but from the looks of things Harry and Lloyd haven’t grown up much, actually they may have gotten dumber. The movie looks like its going to be full of gross out gags and cringe moments, but it will struggle to recapture the magic of the original. But for now we’ll reserve judgement on Dumb and Dumber 2 until the full movie is released this November.