" indelicate "

 [ "indelible" ]

1: Using the adjective 'indelible' with a bad connotation. When you say something is indelible, you are saying that it is indelibly retarded. As in, the subject's stupidity leaves a lasting mark on you. It can also be used as a noun to describe someone who is indelible.

  * e.g.,  ... You left your car running in the parking lot for two hours unattended! You are indelible. 

 [ "indelible to the hippocampus" ]

1: When you're scared AF and remember it forever.

  * e.g.,  ... I was bullied in kindergarten. That kinda shit is indelible to the hippocampus. 

 [ "Indelible in the hippocampus" ]

1: When you want people to believe your fake story, so you make up a fake scientific explanation with big words and technical terms as to why your story must be true. The goal is to misdirect non-expert questioners and listeners, who don't have enough technical knowledge to pick apart your actually very weak explanation.

  * e.g.,  ... "What is your proof that aliens abducted you in the middle of the night 36 years ago and then let you go, leaving no evidence?" 

 [ "indelible marker" ]

1: An indelible marker is a felt-tipped writing instrument used to write on many surfaces that doesn't wash off.

  * e.g.,  ... Matt waited for me to go to sleep and then he wrote "FUCK ME" on my butt-cheeks with an indelible marker! 

 [ "you write your life in indelible ink" ]

1: (phrase apocryphally attributed to Gandhi) , meaning 'you can't go back in time and correct the mistakes you have made; if you have made a mistake in the past you have no choice but live with the consequences and move forward.

  * e.g.,  ... son: I didn't get the grades in math, chemistry and physics that i wanted. Now the MIT won't accept me. Is there anything I can do? father: no. there is nothing you can do. All you can do however, is learn by heart, and apply to your future, Gandhi's famous phrase 'you write you write your life in indelible ink'. What you can do is go study history or some other social science discipline at Columbia University