SxE stands for Straight Edge which is a label for people who don't do drugs, drink, smoke, have sex, or do anything remotely risky. They use foul language to compensate for their lameness.
Straight Edge kids generally were unpopular as young teens, and were never offered drugs or sex. They grew up without friends with whom they were comfortable enough to have fun with.
Eventually they become tight-asses who see themselves as above the kids they envied as a child.

A guy that has sex with a big fun girl that is not GF material on occasion when he is on a drought or just looking to have some casual sex fun with a big girl while trying to last for as long as possible jumping from fat platform to fat platform and trying to stay alive and not fall into any deep folds.

Often Risky

The act of ejaculating on ones own nether-regions (testicular area is preferable, but this can also work with the penis... i guess) after oral sex, and then slapping them on the side of your partner's face. Hold them there for as long as possible while going beep... beep... beep... If you manage to hold them there for 5 beeps you are required to boast to all of your close guy friends about your great achievement, as your man-score now has 100 more points. Also, You do not buy any alcohol for the next week, its on your buddy's tab. However, if it does not last 5 Beeps, it is an automatic dignity suicide, losing you 500 man points and rejection from civilization. A risky but potentially epic maneuver.

1. (n.) The act of two men joining in Broly matrimony, or, becoming very good new friends through getting totally shitcabined and making clouded decisions.

2 (n.) An unorganized, wild, messy territory, formerly attached to Russia, a site to which men make pilgrimage to for the purpose of bro-ing it up, more specifically getting drunk, partying, and engaging in risky feats of sport/sex with native women. A main exporter of dirtbikes, lacrosse equipment, Stoli ("Broli"), and rubbers

A game where there are 5 turtles. And you must get one of the turtles to suck your dick. Uncomfortably one of the turtles is a snapping turtle.

The act of a male receiving oral sex during childbirth. A risky maneuver considering the circumstances, but according to legend provides mutual benefit for the couple, as women who swallow during pregnancy have a lower risk of complications, as well as the established scientific fact that women giving oral sex are more relaxed, and the male gets to have an orgasm. Probably.

BBPS - Bare Back Pussy Slide. When a women will rub your penis with her genitals without having you penetrate her. This is can be useful if you want to COB (cum on body). Some SPs and MPAs will let you do this; though it's not recommended as one could easily penetrate the vagina by mistake. While the act itself is relatively safe, the chance of accidentally penetrating the vagina makes it too risky for most seasoned hobbyists.

Is also sometimes called BBCG - Bare Back Cock Grinding.

See also Pussy Slide, Russian sex, BBFS, BBBJ, Italian sex. MP.