LAF

While the word wanker is a more general and term for expressing disdain for somebody, the word LAF describes a person with a tendency to show off or brag in an excessive and embarrassing way.

LAF can also be used as alternative assignment of feminine behaviour.

"well at first i thought this guy delivers, but in the end he was just another laf."

"don't be such a LAF, come and drink with the boys"