What if a friend of mine was smoking meth all of sudden they start sweating fushiously start vomittin they fall out its like they were havn a seizure?

Meth-related seizure. Yes, it's not just like your friend was having a seizure -- they probably did have a seizure. It's easy to have an overdose with this drug because it's never clear how much you're getting or what the quality is. This is another great reason to stop using meth.
Yes, seizure. See link below: www.Wellsphere.Com/wellpage/meth-seizures find out all about meth seizures, including the most common uses, side effects, interactions and risk factors from leading medical experts.