A phrase said to League of Legends players and many internet-goers in general; used as an insult to indicate that a person needs to stop spending so much time on the computer and get a life outside of it.
Friend: I just got Challenger in League!! It only took like 5 years of me playing the game for 8 hours straight every single day!!!
Me: That's awesome!!! Now that you've got that all finished up, you should go outside and go touch grass for the first time in fucking forever, you degenerate loser!
It would seem it's equal to "fucking." Based on the lyrics for The Dresden Dolls' "Sing," where some half-deaf music downloaders posted the lyrics as being "There is this thing that's like fucking..." when the booklet and song clearly say "There is this thing that's like touching."
"I was totally fucking a boob..."
"What?"
"I mean... touching. I'm a 12-year old dumbtouch..."
"Die. Please."
To touch a dwarf..err, to touch a little person, in order to satisfy the fetichist in you. The touch can be a blatant open handed stroke or a stealthy scrub. Any part of a dward, oops, any part of a little person counts, but there are bonus points if you score a head touch.