Me

(noun) A person who sits on the front porch and intimidates, says negative things, or otherwise makes things unpleasant for those nearby.

Not being in relationship with a significant other, natural state of a human.

Humans are not pair bonding species like mute swans, the idea of males living with females and providing them is a really backward thinking that religion imposes on society. Hence all people except priests were forced to be married and... great atleast unmarried live happy right?(you know boink anyone they like and dump them).

Not so soon. Eventually younger people were brainwashed to pursue marriage and any kind of premarital intercourses were banned, thus marrying up became this great thing that men felt lucky to do. Fast-forward ideas of liberalism spread and along with development in science which destroyed religion.
Now most western people f anyone they like. But still men still retain a little bit of simpery, that they must couple with other women (women readily accepts because he pays her bills) so people introduced their own version of marriage which doesn't involve government bs involved.

Just like ancient people used to shame and make fun of people who choose to stay unmarried (except priests) even modern men in this scientific world still retain a form of shaming done towards single people "who are not in relationship with partners" (especially men)
So after all this history lesson. One take away is to just use ur brain to objectively choose what you require in life. Humans are beyond "Monkey see, Monkey do, if not other monkeys bully" attitude.

When you are currently not in a relationship with a significant other.

It usually does not bother you, but the problems start when selfish and inconsiderate assholes rub in the fact that they have someone, and start saying they "love their oh-so-sexy boyfriends/girlfriends" and start going on and on about what he/she does for them, CAN do, and blah blah.

NOBODY CARES HOW GREAT HE/SHE IS TO YOU!! If you're taken, and love your partner a lot, then good for you, but for goodness's sakes, at least show some consideration for SINGLE people! Some of these people may even be heartbroken ones, who have been abused by past partners, or just simply some that are sick of hearing about some stupid narrow-sighted people who only see either how "hot" their partner is, or how much money he/she has.

Talk about your partner if you want to.. but.. just calm down about it. Your life does not fucking revolve around him/her, so don't act like it.

Independently Owed and Operated.

The state of not being another person's bitch anymore. Feeling free to hit on other bitches and doing whatever you please.

it means that you are alone not lonley