lottery ticket (possible) quandry

I'm introducing probability and odds to my algebra 1 students tomorrow with scratch-off lottery tickets. I have 1 for each class (total of 3) and can't wait to see if I win anything...or do I mean we? If I (we?) win, do I have to share the $$ with my students?!? The max $$ on any of these tix is $500. Even though there is such a small chance that anything will come up, what if????? And to top it off, I bought 2 for a coworker because she is going to do the same thing. Now, she paid me for them already, so they are technically hers, but...which two do I give her? And how awful would it be if the two random ones I chose to give her were big winners? Oh, I haven't felt this excited about the future since the judging of our holiday sweater competition!!