At my uni, someone scrawled "When life gives you lemons" on the back of a toilet cubicle door. Some replies:
YOU'RE PROBABLY TOO SWEET :)
It usually means you need to suck one!
I'M GAY LIZ LEMON
SHut THE F*CK UP AND EAT YOUR LEMON
Ask for tequila! :D
Eating lemons is MURDER! D: LOL LOL LOL< you best be trollin'
This comment is definitely not LOL worthy