Veging - Is extreme relaxing. So extreme, that veging is generally spent in the semi-reclined or fully-reclined position. You are awake but your movement is limited to necessary-only activities, such as visiting the toilet, getting a drink, ordering a take-away and / or changing the TV channel. Surprisingly, veging has nothing to do with actual vegetables. Tenuously, links may be found in A: vegetables generally staying very still and B: during veging, people practically take root and, as every vegetable expert knows, vegetables have roots.
Face palm - I discovered the meaning of this term fairly recently. I'd seen various references to 'face palm' on Facebook and Twitter but had no clue to it's meaning. A 'face palm' is applying ones palm to ones face to indicate that the face palmer is experiencing an 'oh no' moment of embarrassment, disappointment and similar. The physical action of applying ones palm to ones face is fairly old school but using the term 'face palm' to indicate embarrassment in written format is fairly, ahem, new school.
Talk to the hand - Firstly, do people still 'talk the hand'? Is it current? I suspect not. Either way, to 'talk to the hand' is an expression of fuckoffedness. To 'talk to the hand', may conjure up images of people placing ones hand in front of ones face, then chatting aimlessly to said hand but this would be an incorrect conjuring. A 'talk to the hand' is a dismissive expression / action. No hand conversations actually occur.
What evs - This is an abbreviation of 'whatever'. Arguably 'whatever' is a fairly short word, thus it hardly needs abbreviating but likely the kids of today would disagree with me (or utter 'what evs' in my generally direction). 'Whatever' or 'what evs' is used in much the same way as 'talk to the hand'. It is a dismissive term. In other words, I am not interesting in, whatever it is you are saying, doing etc.
Like - previously just a fairly innocuous word within the English language, used to describe when something is similar or the same as something else. Recent uses of the word 'like' are nothing like (ahem) the original. Like is a pause word, a word uttered frequently in every spoken sentence. For example, 'then I said to her like no, I am not going to that bar, it's like soooo tacky and miles away, and anyway, I'm like wearing 3 inch heels and I like totally can't afford to get a taxi because I need money to buy like cocktails'. Basically, if you remove the word 'like', the real meaning of the sentence is revealed.
Ill text you coupled with the optional, imaginary physical texting action - In the dim and distant past, people said goodbye, these days people say 'ill text you' and, often combine it with a mimed texting. Presumably, if you don't own a mobile phone, you still say goodbye. Although, clearly, these non-phone-owning people irrelevant.
OMG - is an acronym for 'oh my god'. Users of the term OMG probably don't know what an acronym is and, quite probably, don't realise that OMG is an acronym for 'oh my god'. The term 'OMG' is generally used to indicate surprise or shock / mock-shock as in 'OMG what is she wearing'! Incidentally, what is she wearing, is not, despite appearances, a question - it is, in fact, a put-down.
Doubtless, I have missed many modern terms from my list. Yet, these are the terms that I find the most interesting. Please note, my definitions are in no way meant to be informative, they are generally meant to be sarcastic. But you know, like, if you disagree, like, you know, what evs.