I Am on Vacation but I Couldn't Resist

From a scathing review - if a poorly written and line-edited review can really be scathing - of Knocked Up:

The writing doesn't feel real or natural. It's just a bunch of guys sitting around the table being lewd, vulgar and riffing on each other.

If you could still be serious about using the word "riff" before now you are definitely in troubs when a lady who uses sentences such as

My happy feet really wanted to get the heck out of there

is copping the steez.