These are used mostly in typing although sometimes in conversation. not all of these are from me, most are things my friends and I have come up with at some point during our college days:
meetoo - for me too. I think the double o needs a double e
awky - awkward, used to describe a situation
"sitch" - situation i.e. "so let me tell you about this awky sitch from last weekend"
obvi - obviously i.e. "obvi I am too lazy to say the whole word"
My grandmother is also famous for making up words and probably has her own dictionary, but here are two of my favorites:
texmex - text message "just send me a texmex about what time you are coming over"
warbaums/warmart - walbaums (the grocery store), walmart
Feel free to comment and add your own...