'If it ain't broke, ya ain't trying hard enough!'
'Are they in our base again?' (Explosion) 'Yeah, they're in there'
'The cake is a lie'
'Don't make a promise, if you can't keep it'
'Bleep Bloop! Achievable unlocked!'
'Why are you running into the wall.... oh crap.'
'They put the release date off 'till when?!?!'
'What does this button do?'
Just a few from the wide world of lunacy named Xbox Live
Also: 'The tree just killed me!!1!'