when you are fingering a girl with four fingers and you then proceed to use your thumb and rub her clit with it while gobbling like a turkey
"yo billy said you hand turkeyed that girl you met at that party last night!"
while having sex with a girl you pull out when you are ready to cum and you put your hands around your junk palms outward and you jack off that way untill you shoot all over her and you scream out hadoken like Ryu from street fighter.
"God Tommy you a nasty ass kid, i cant believe you hadokened all over your girlfriend last night at that party"
the process in which when you are four finger-fingering a girl and you take your thumb and rub her clit while making a gobbling sound at the same time.
"yo billy said you hand turkeyed that girl you met last night!"