. >> the mayor of london. >> borris johnson. remember him during the olympics? >> i'll just call him bj. >> oh, gosh. >> what is going on today? >> in fact, i want you to call me mayor johnson. >> i guess. not doing that. not happening. >> let's mover on then. >> this show. all right. so, prom can really break the bank. a loft things, some people get limos. you got to go out to dinner, it is all of these things happening. but now it is how you ask mike. >> well, it is weird some young men are spending money just to ask a women to prom. >> prom postal use elaborate way to ask your date to prom. so these prom postals are costing hundreds of dollars. there is a surround say that says teens use one third of their prom budget on just i guess calling it popping the question. >> schlere is a idea, not elaborate, but cute and a young man tweeted it to you today, alex. >> that's right. >> so this one tweet so, her nephew prom-posted to his girlfriend with a poster sign. made with solo cups. >> oh, the blue solo cups? >> it says don't let