Tyga's biggest male role model was the rapper he listened to and idolized while growing up ... without his father.
Tyga was at LAX when he explained his recent tweet ... a side-by-side of himself and Tupac, which he captioned, "Dad."
The video is interesting ... we rarely see a serious side of Tyga, but he was straight-faced as he talked about his fatherless childhood.
Speaking of which ... he also gave Rob Kardashian props as a possible stepdad to his son with Blac Chyna.
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