These are common for Garry's Mod, it seems to have become a breeding grounds for these, I know of only one way to avoid these, simply never open the steam overlay for Garry's mod and you should be fine

















Guides like "How to shove you head up your own bunghole" or "how to ♥♥♥♥ yourself" are gay, do not read even as a joke.[/strike][/b][/u][/i]