['While in grad school I missed out on a Foo Fighters concert my friends went to; I was really jealous.', 'I love the foo fighters too.  I would have be raging!  What happened?', 'I just had to study for the four tests I had coming up, but I got to see a bunch of cool videos from my friends.']
Well thats not too bad then.  Good on you for putting your education and studies first.  Im sure it wasnt easy at the time.
I was in grad school and missed out on a good concert one weekend.