The inability to stop smiling because of someone you are romantically interested in/involved with. Both men and women suffer from Girlface regardless of whether they are interested in a man or woman.
A: Why are you smiling?
B: No reason...
A: You have girlface! Why do you have girlface? Who's giving you girlface
B: <evasive> Um...
An oral sex method in which a partner simultaneously gives cunnilingus (usually with tongue insertion) to the female recipient and inserts their nose into their anus, thereby resembling the penetrating partner pressing their face against the grill of a car . Cleaning out the rectum beforehand is recommended. This can also be done vice versa.
Maria: so how was your weekend?
Brianna: Awesome! We tried out the Indiana Grillface!
A physical state whereby a person has consumed so many alcohol beverages that they consequently lose all control of human functionality and barf into a grid - or other plumed in waste disposal systems.
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.