Check out Conor McGregor d**k Gets Bigger after last face off with mayweather… LOL

Conor McGregor was VERY excited about the weigh … at least judging by the bulge in his pants.

The UFC superstar weighed in at 153 pounds … while parts of him were hanging off the scale.

Floyd weighed in at 149.5 … some room to grow.

Congrats to Calvin Klein, the maker of McGregor’s underwear, for containing the beast.

Irish eyes are smiling.

Floyd and Conor now have just one date left — when they square off in Vegas on Saturday night for the super fight.

Good luck!