1)mispelling of phallus(the scientific name for the male reproductive organ)
2)can also be used as an insult
1)"look at how flacid his fallis is"
2)"omg, that kid is such a fallis. not only does he gel his hair but he steals people's essays too!"
"i think id kill myself if my last name was fallis"
adjective, when a women’s fat overhangs her pussy (3)
ahah, i bet that women has a fallis