The phrase "tranny trick guys" most likely refers to the , where "tranny" is a long-standing abbreviation for transition skating .

: Launching out of the transition and landing back in while riding backward.

However, it is important to be aware that outside of specific niche hobbies like skateboarding or automotive repair, "tranny" is widely considered a against transgender people. 1. Skateboarding: Transition (Tranny) Tricks