Achilles Meal 

A food you can't refuse. Usually served to either pave the way for a huge favor, or to soften the impact of potentially devastating news.

"Dude, she hit me in my Achilles Meal: bacon-wrapped filet. I had no choice but to give her my wallet."

or

"Once I saw we were having homemade ribs, I knew she must've killed the car. My Achilles Meal had struck again."

Achilles Meal by brainchild September 3, 2005

Achilles Heel 

A weak point or quality of a person

The kid wasn't good at jump shots.
"Jump Shot are his Achilles Heel"

Achilles Heel by the mess May 15, 2004

Achilles' heel 

noun; a weakness in someone or something that is strong overall (the weakness is often, but not always, seemingly small but crucial, leading to misfortunate events)

The Brazilian soccer team's defense was its Achilles' heel in World Cup 1998. Despite having strong forwards, the team was ultimately scored upon three times by France.

Achilles' heel by Nathan September 1, 2008

Have you heard of Achilles? 

A rhetorical question asked to a dumbfounded person in response to a question, due to a term they are unaware of.

Example: Don’t be a complete bush and meet me at Casa de Tempe.

Answer: Where is that at?

Rebuttal: Have you heard of Achilles?

Have you heard of Achilles? by long distance relationship October 17, 2012

Achilles heel 

A point of vulnerability.

The warrior Achilles was totally protected by his armor, except for a small spot by the back of his foot where an arrow went through.

A weakness for chocolate cake was the dieter's Achilles heel.

Achilles heel by Chloethecat June 29, 2012

Achilles dick 

This is a dick that you can never say no to, because you find it so amazing, and therefore it is your biggest weakness regarding sex. An Achilles dick can be a major temptation whether you are single or already in a committed relationship.

I know you keep seeing him because he’s your Achilles dick, but you need to find a man who has heart too.

Achilles dick by Littlefoot96 June 4, 2020

Achilles tendon 

A tendon in your foot right above your ankle.
Vital nerve for moving your foot and standing

If you sever your achilles tendons, you won't be able to stand

Achilles tendon by Dr. McFeces December 25, 2011