Shorty on the side is a female who is not your main chick. Men see these chics on the side and refer to them as their "fuck buddies" and "honeydip" Shorty on the side is your ride or die chic, she down for whatever.
phrase, started as an attempt to say "put your drinking hat on" and "pull yourself together" at the same time and came out as "pull your shorts on". Means - get yourself together, lets go, its party time, stop being crabby, get out of bed,....or anything else needing a pep talk.
The girl you are sleeping with but she is not your main girl or wife. Normally you go out to a club and you meet a girl and have sex with her. Although the sex was great because you have a main girl or wife you cannot make this chick you main girl so she becomes someone you can have sex with but not a long term relationship. Usually this is a smut who has slept with many other people that ar in your circle of friends.