Pec Flex

LaBarbara: You can't argue with those luscious pecs!
Hermes: No I can't. But I can ask him to stop wiggling them in my face!
Barbados Slim: I'm not wigglin' dem. Dey do dat by demselves.

Similar to Gainaxing, where a male character's pectoral muscles jiggle and bounce, except that they flex them to make it happen. However, generally it is used not so much for Fanservice as it is used as an often comedic demonstration of "manliness". Other names for it are the "Pec Bounce", the "Pec Dance" (usually this name is used if people flex their pecs in time to music), and the "Pec Pop".

Another variant is the "Ab Wave", where a character with a well defined six pack will flex their stomach muscles like a wave. Generally, this isn't so much saying "look how strong I am" as it is "aren't I sexy?"

For cases of Pec Flex when the flexer has less than impressive pecs, see Flexing Those Non-Biceps.


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    Anime & Manga 

  • "Slayers''
    ''I wanna do that! But I can't!"
    • It is worth mentioning that this line appears when Lina Inverse sees the "Dragon Blood Macho Battlers". A gang of bandits whose STANDARD GREETING apparently is to flex and twitch their pecs.


    Live Action TV 

  • Approximately 30 seconds into the music video for Rammstein's Mann gegen Mann.
  • Done approximately 1:27 in the LMFAO music video of Sexy And I Know It.
  • Demonstrated in the video for Joan Jett's "Do You Wanna Touch Me." Not demonstrated by Joan, sadly.

    Professional Wrestling 

    Video Games 

    Web Original 
  • Gaia Online's Halloween 2007 vampire attack event had the Von Helson Twins ordered to kill Liam. Liam seduced the twins by flexing and spouting hilariously bad come-ons, which saved his life (and scored him a threesome) but left him a couple of stalkers.
  • From the Planet Fitness Clunk-A-Lunk game, we have Pecadoodledude.
    Meet Pecadoodledude! You know this guy. He's the narcissistic nimrod who's always parked in front of the mirror, pausing between sets to lift up his shirt and peep his almighty pecs! He'll make 'em bounce! He'll make just the right one go! And then just the left! And then he'll juggle them back and forth! You'll wish that he'd knock himself out with one of his considerable chesticles! But he won't. He'll just keep checking himself out. So clunk away, my friend. Clunk away.
    • At least to this troper, it kinda sounds like the narrator keeps complimenting the guy.
  • In this video, two guys use this trope as a form of morse code.
  • One guy turned this trope into a language.
  • Marc Lobliner from Tiger Fitness does this in almost every video.
  • One guy bounced his pecs to the Harlem Shake for about 7 minutes.

    Western Animation 
  • The Fairly OddParents has two characters that do this. Juandissimo Magnifico, Wanda's ex-boyfriend, does this along with his constant magic shirt ripping. Also, in the Made-for-TV Movie Abra-Catastrophe, Cosmo gains massive pecs from a workout video, and he Pec Flexes to absorb Crocker's magic.
    • Who could forget Jorgen Von Strangle, toughest fairy in the universe. He loves to flex his muscles in the faces of anyone he can. He even refers to them as another sentient being (ex: "My muscles and I are still laughing!" Muscles: "Ha...haha...ha!"
    Crocker: Those are some massive pecs.
  • Johnny Bravo can juggle with his pecs as a party trick.
  • Homer Simpson imagined himself doing this once while under the influence of Duff. Flexing them in time to the Can Can, too.
  • Lord Pain does this in The Grim Adventures of Billy & Mandy to show off his tattoos of Grim right in front of him.
  • An odd mechanical version done by Adonis in his Powered Armor in the Teen Titans episode "The Beast Within", right after he knocks Cyborg out at the beginning of the episode.
  • Buck bounced his pecs in a cartoon cartoon Friday crossover with Johnny Bravo.
  • Futurama has Barbados Slim, and his luscious pecs. They apparently wiggle by themselves.
  • Happens precisely once in Meet the Robinsons.
  • Young Macintosh from Brave does this in his introduction (here's the clip in question.)
  • This happens a few times in Regular Show.
    • Twice in "Rigby's Body", once by the bodybuilder that jumped into Rigby's body and again by Skips. His nipples light up.
    • Mordecai gets one too when he daydreams in "Meat Your Maker".
    • The episode "Bald Spot" features Muscle Man doing thisas a plot point. Specifically, he kept flexing his pecs (which translates in this case to jiggling his manboobs) throughout the entire episode in order to distract Starla from his bald spot on his head.
    • Rigby does this after he gets buffed up in "One Pull Up".
    • This also happens in two Cartoon Network bumpers of Regular Show where one's a fusion of Mordecai and Skips, and the other is two clips of "Rigby's Body" with Skips and "Meat Your Maker" with Mordecai when he daydreams back to back.
  • In the My Little Pony: Friendship Is Magic episode Rainbow Falls, Bulk Biceps does this between training sessions. Fluttershy seems to think it's cute.

    Real Life