A time honored tradition is scooting the game clock ahead in Animal Crossing to catch bugs/fish at certain times, make more bells, get rare items and all sorts of other things. However it's also sort of cheating, so I'm wondering if there are negative effects or other icky things to take note of before casting Haste.

I have noticed that after moving the clock forward a few hours my character has started tripping like it's Smash Bros Brawl or something. I'm not wearing the King Tut's mask and I didn't get a fortune from the fortune teller (I've played for like 2 hours) so I'm wondering if that's connected. 

Are there negative effects to playing around with the game clock in New Leaf? If so, is there any way to sidestep/fix them?