Its like tripping on a drug only it is used for drugs such as:

chrono-rib, steez, candy-teeth, pex, treep, grope ope, ONain, Pope's Vagina, and OPD

When a girls tits pop out in the middle of a video chat on accident.

1: the act of the female or male partner attempting to slip in on or more finger as to leading to a full fist worth of the old money train.

Sweaty lips. Labia with little or no ventilation will result in slips.

when u left your fly open, somebody notice a nut slip out into the open most likely it was a left nut...
nobody wants to say anything embaressing to that person, so its called a slip(a bad open fly)

1)A relapse on alcohol or drugs, usually short in duration with minimal harm done.
2)To insert ones penis into anothers vagina or to engage in sexual intercousrse.

"the condition wherein the sufferers arse cheeks and or thighs slide past eachother with a worrying lack of friction during ambulation. The condition fequently occurs in association with itchy arse syndrome and high levels of shame."