furstalk 

a furry who wears the fattest fursuits or looks like hes actually growing fur.

My god, that furstalk wont stop growing, dammit!

furstalk by Tuna Kangaroo December 6, 2017

Fourstalk 

Following the movements of someone through Foursquare. It usually affects narcissistic individuals who post waaayy too much personal information online and make themselves easy targets.

Did you see Jen added her house as a Foursquare location? She's just asking to be Fourstalked.

Fourstalk by Bluon April 8, 2010