I've never heard of swallowing the lavaliere. Sounds like that could do some damage to your GI tract. :/
Lavaliering is not done lightly. At my school, it meant that both partners considered the relationship to be serious, possibly (but not necessarily) leading to marriage. Pinning was even more serious; it was a precursor to engagement.
Sororities usually do candle passes for each step - lavaliering, pinning, engagement, marriage, pregnancy. (When I had my candle pass for my engagement, my sisters somehow got confused into thinking I was pregnant. Nearly 11 years later and still no baby... LOL)
You might talk to your BF, or talk to a mutual friend so that he learns of the idea of lavaliering. If this isn't a tradition at your school, maybe it's time to introduce it.