When I was changing my electric guitar strings.. one of the strings got stucked in the nut slot.. how do i solve this problem?
Lube your nut with graphite/vaseline.

Or you need to file it wider because you are using wider strings/
Well, this is kind of funny...if your talking about the little slits in the nut..thats where they're supposed to go..
Crappy Gear:
Ibanez RG350DX
Ibanez RG7321
LTD F-10
Dunlop Jazz III's (Black)
D'Addarrio .09-.46's
I wanna remove the string.. but i cant.. it's stuck in the 'hole'
worst nightmare...
yea i manage to loosen the strings.. thanks..!!

but the pencil lead powder flew everywhere...
yeh he meant when putting on new strings always put some sort of lubricant/smooth stuff in there so that strings can easily pass through and theyre smooth to remove