The act of two bros engaging in simultaneous oral satisfaction of each others genitals otherwise known as 69. However, a friendly differs because it is NOT gay, this is due to the fact that it is not a romantic gesture, but simply a method for an enjoyable release.
Bro I need to get off right now. Can we friendly???
A release is the act of ejaculating.
Bro I haven't released in so long, let's friendly!