@icameheretoawoo No, you need two. Plus it takes a shit ton of time, depending.
If you really need wifi and dont want to use your own I would recommend wardriving til you find an open router or one with WEP security. Shit, park at McDonald's, they have free wifi, but they record your MAC. Spoof the MAC, kiddies. Or just use a little 6 dollar USB WiFI NIC from Amazon and throw them away after you do something stupid.