<human>: Can you provide a brief rundown of the text in within 3 sentences?

Ok title is off, but besides the point.
So im on reddit on average 4-6 hours a day, so i go through alot of content from many different sub-reddits during that time. Alot of her free time consists of looking through ifunny on her phone. Well my problem is, she likes to show me alot of these photos when we are together in attempt to make me laugh, which is very hard to do because 1. i have already seen alot of the content she shows me, and 2. I like to laugh at the more wilder side, such as /r/WTF , /r/ImGoingToHellForThis , and /r/Unexpected and some deeper subreddits, she shows me stuff iv seen on /r/funny and it still is hard to make me laugh.  
My question is, how do i make her feel like what she has to show me is funny? do i pretend to laugh? after a while i just cant stand looking at all the photos she shows me. 
I try showing her stuff on reddit, and she just gets annoyed at the fact i mention reddit.
<bot>: My girlfriend shows me ifunny pictures that i have already seen on reddit, how do i make what she is showing me important?