It's a sentence or phrase that begins with "lol" and ends with "lol." People who use lolsandwiches are normally above the age of 35 and tend to capitalize every letter in the sentence, and these sentences are normally followed with an unnecessary amount of exclamation points.
LOL, I READ ON URBANDICTIONARY.COM ABOUT A WORD NAMED LOLSANDWICH AND IT WAS FUNNY LOL!!!!!!!!!!
A wheat-bread sandwich containing a ginormous dildo with a piece of lettuce on top to be served orally to a certain douchebag that manages a certain sports bar in Fox Valley, IL that has you move tables 3 times because his incompetent employee fucked up your reservation.
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.