What is Calffuls?
1.
1) A crease in the middle of the calfs caused by pre-wrap straps for shin splints.
2) Muscular calfs with a defined muscle.
It comes from the term
1) When I do track I develop shin splints and to help support then I put on pre-wrap straps on my calfs to hold the tendon in place. The tight straps cause a crease in my calfs and then I get calffuls.
Sentence: Look, that hurdler has calffuls.
2) When I do track we run a lot and our calfs get stronger and defined. This then causes us to get muscular calfs resulting in calffuls
Sentence: Did you see that runner's calffuls?
See