You Suffer by Napalm Death. It's good because it's pretty short, and the lyrics are quite simple.

Here are some I enjoy:

• Mother - Danzig
• Anthrax - Caught in a Mosh (not in a public karaoke venue, too long, but at home or with friends, banger)
• Sugar - System of a Down
• Pump It - Electric Callboy

Black Sabbath's Paranoid. Easy to get into to, gives room for your vocals to find their own way into loud territory, and it'll almost always sound awesome.

Fucking easy. If you got the pipes for it, the correct answer is

Bloodbath - Eaten

If you can get the low guttural "eaten..." And get the responses while keeping your breath, You'll get the whole crowd in.

Dragula by Rob Zombie. Catchy and well known.

It's Ace of Spades and it's not even close.

Chic 'N' Stu - System of a Down

Saw a guy in a wheelchair do Angry Again by Megadeth and he killed it. So I’d say that lol

Blind Guardian - The Bard's Song

Ace of Spades and Breaking the Law

I can’t growl, so I’m going with all of the songs from Opeth’s “Damnation”.

The ones I regularly go for

• Sober - Nanowar of Steel
• Murmaider - Deathklok
• We Got The Moves - Electric Callboy

These songs help the digestion by non-metalheads by being very funny. Sometimes I just do a singalong with the official music video (Batmetal Returns for Murmaider) so people have something funny to watch as well.

Also

• Bard's Song: In The Forest - Blind Guardian

But it's more of a folk song than a metal song.

The trooper - Iron Maiden

I'd say the easiest is "From skin to liquid" by Cannibal Corpse 😉

Beelzebub Showdown - Tenacious D

I'd start from Rammstein 😜

Nargaroth - Black Metal ist Krieg

If you can remember the lyrics.