the most impractical weapon you have ever incountered in a videogame

[Professor James]

The Crowbar from the half-life series might not be the most impractical weapon but it's not exactly a good weapon either unless you're really strong and in that case you might as well use your fists.

 

[Lilani]

The Holy Mackerel in TF2. It's a dead fish wrapped in paper. What more is there to say?