unexpectedtypingflea
when you tap the mouse pad accidentally and the cursor appears half way into the sentance you have already typed, but you can carry on typing anyway because you don't realise
boy: thaamazing though t would be
girl:wtf?
boy:omg, sorry, i just had an an unexpectedtypingflea, it should have been That would be amazing though
girl:wtf?
boy:omg, sorry, i just had an an unexpectedtypingflea, it should have been That would be amazing though