1. The Act of fornicating with an older lady also known as a Cougar
2. The Act of getting Mauled by a mountain lion.
1. Suzy Got Cougar Stomped by Ryan last night.
2. Frank got Cougar stomped now he is in the hospital
After a hot and steamy night with a "cougar," in the shower, on the counter, maybe even on the floor; she leaves you unexpectedly under cover of the night. May result in a deep deep depression, and possibly a sweet porn video you filmed without her knowledge.
"Hey man did you bring any chicks home after you left the bar?"
Ya bro, but i totally got COUGAR-STOMPED!