Horse Math

There are at least two kinds of unicorn. Ones with wings and ones without. U + W = U

A winged unicorn without a horn is a pegasus. {(U + W) - H} = P

 A pegasus without wings is a horse. P - W = H₂

A horse with without legs? H₂ - L =...

Is glue! = G

(I don't think it's funny. I just like drawing with my fingertips.)